Sonic the Hedgehog series

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The Sonic the Hedgehog series is a franchise of video games released by Sega starring their mascot character Sonic the Hedgehog. The series began in 1991 with the release of Sonic the Hedgehog on the Sega Mega Drive/Genesis. An 8-bit version of the game was also released for the Master System and Game Gear formats. Sonic was responsible for single-handedly turning the tide of the 16-bit console wars, and his first game soon replaced Altered Beast as the default pack-in game for the Genesis in North America and Europe. As of May 2006, the franchise has sold more than 44 million units, with more games slated for release in the later half of 2006.

Games in the series are developed by Sonic Team, with the exception of some spinoffs that were independently developed by Sega of America. The main programmer for the first game was Yuji Naka, who would later become head of the Sonic Team division, and the game planner was Hirokazu Yasuhara. The music of the first two Sonic the Hedgehog games on the Mega Drive and Genesis was composed by Masato Nakamura of the Japanese band Dreams Come True.

Story

All games in the series feature a teenage hedgehog named Sonic as the central character and protagonist. Sonic frequently takes it upon himself to save his planet from the forces of evil that plague it. The main antagonist is the evil genius Doctor Eggman (aka Robotnik), whose long-term goal is to create the so-called Eggman Empire.Although the mainfestation of Dr. Eggman's goal to conquer to world was left unnamed in pre-32-bit games, Sonic Adventure and games since then have heavily developed this aspect.

In order to achieve the best possible ending in the game, Sonic collects the Chaos Emeralds by visiting Special Stages. When he has all Emeralds, he can transform into his most powerful form, Super Sonic. In this state, he is completely immune to all enemies and obstacles (although he can still be killed by falling into pits, being crushed and drowning), gains the ability of flight in certain circumstances, and the unique skill of breathing in space. However, Sonic's quest does not necessitate collecting the Emeralds himself; he must only prevent Eggman from getting them and dooming the world with their power.

The premise of Sonic 1 revolves around Eggman trying to conquer the Earth by imprisoning animals inside robots and then using them as a delaying tactic so that he has time to collect the Chaos Emeralds. In Sonic 1, our hero is charged with saving the animals and collecting the Chaos Emeralds before Eggman can. Sonic repeatedly engages Eggman's bosses in minor skirmishes as he makes his way across South Island. The game culminates in a showdown with the master villain at the secluded Scrap Brain facility, but the doctor narrowly escapes.

Eventually Sonic learns that Eggman has showed up on Westside Island and is up to his old tricks. There, he meets Miles "Tails" Prower; they join up and form a close team in preparation for the events in Sonic 2. The two must work together to prevent Eggman from collecting the island's seven ancient powerstones before the imminent launch of the Death Egg. Eventually Sonic climbs aboard Eggman's Sky Ship and is forced to leave Tails and the damaged Tornado behind; his final destination is the Death Egg. There, he battles a silver, hedgehog-like robot and a giant battle suit controlled by Eggman. After the battle, the Death Egg explodes and falls through the atmosphere; Sonic flees the doomed vessel and lands aboard the Tornado.

Instead of colliding with the Earth, the Death Egg crash lands on top of 'the island in the sky', Angel Island, its weight forcing the so-called Floating Island to fall into the Sea. The opening cutscene of Sonic 3 shows Tails piloting the Tornado towards the sunken island, with Sonic racing across the water ahead of him. Just as Sonic makes landfall, Knuckles the Echidna, makes his first appearance by knocking the Chaos Emeralds out of Sonic. Convinced earlier by Eggman that Sonic is evil, Knuckles steals the Emeralds and hides the emeralds in 'secret' locations across the island. Sonic wants the Emeralds back and races across the Island with Tails to retrieve them. The game climaxes with a short skirmish between Sonic and Knuckles at the Death Egg's reconstructed Launch Base. The encounter however is just a delaying tactic because the Death Egg soon launches and knocks Knuckles off the platform. As the island rises back into the sky, Sonic rides an abandoned Eggmobile over to the Death Egg's control deck, and after a short battle with Eggman, Sonic disables the Death Egg before it is far above the island.

Sonic 3 & Knuckles shows the Death Egg crash-landing on top of the Lava Reef volcano. After falling from Death Egg's launch pad, Sonic lands in the middle of Mushroom Hill, a huge forest characterised by its mushrooms that are more than twice Sonic's size in height. Our hero sets out once again to stop Dr. Eggman from repairing the Death Egg, and to collect the Super Emeralds. Sonic hitches a ride on the Flying Battery over to Sandopolis, and enters the Lava Reef crater via a haunted pyramid. Inside the crater, Sonic finds the cave that leads to the mythological Hidden Palace where the Super Emeralds and Master Emerald are hidden. Knuckles confronts Sonic just before Sonic reaches the Emerald altar, and the two fight. Their fight is cut short by Dr. Eggman betraying Knuckles and removing the Master Emerald. Sonic and Knuckles put their differences aside; Knuckles escorts Sonic to a transport that leads up to the Sky Sanctuary. Sonic enters the portal and a beam of light shoots Sonic into the clouds. In the background, the Death Egg is seen taking off and the island slowly falling into the Sea. As he makes his way through the clouds, Sonic meets another Sonic-like Robot and two engage in a series of boss battles reminiscent of those in Sonic 2. Sonic destroys his copy and catches another ride on the Death Egg as it flies overhead. Sonic makes his way through the flying fortress and eventually destroys it. Eggman flees to activate his Doomsday device, but Sonic pursues and unleashes incredible Emerald forces as Hyper Sonic in his ultimate showdown with Eggman.

In later games Sonic is joined by Amy Rose, Cream the Rabbit, Team Chaotix and a host of other characters. He also has to deal with numerous other foes, such as Metal Sonic, Chaos, Fang the Sniper and Black Doom. Two other major characters in the series are the Anti-Heroes Shadow the Hedgehog and Rouge the Bat, who usually oppose Sonic and his friends but will aid them when the situation calls for it.

Main characters

Sonic the Hedgehog: The series' main hero. Sonic has incredible super speed and numerous other abilities, and uses his skills to save the world from Dr. Eggman. He is impatient, laidback, confident and always on the look-out for an adventure.

Dr. Eggman: Also known as Dr. Robotnik, Eggman is Sonic's arch nemesis and the series' main villain. He is egg-shaped and has a giant orange moustache. Eggman is an expert in robotics and wishes to conquer the world and build the Eggman Empire. However, Sonic and his friends always stand in his way.

Miles "Tails" Prower: Sonic's best friend. He is a two-tailed fox who can fly for a limited time by spinning his tails rapidly. He is a skilled mechanic and has his own plane called the Tornado.

Knuckles the Echidna: The last of his kind, Knuckles resides on Angel Island, where he guards the Chaos Emeralds and the Master Emerald, the source of the island's ability to float in the sky. Knuckles is very strong; his spiked fists are capable of smashing through boulders. He is hotheaded, anti-social and gullible.

Amy Rose: A pink hedgehog who has become Sonic's self-appointed girlfriend. Ever since Sonic saved her in Sonic CD, Amy has been in love with Sonic and she now wants him to marry her. Amy is a skilled fighter and smashes enemy forces down with her trusty Piko Piko Hammer (which she gets from hammerspace.)

Cream the Rabbit: A naive young rabbit who lives with her mother, Vanilla. Cream's best friend is a Chao called Cheese ( which she uses as missile.) Because Cream has been brought up like a princess, she does not like being involved in other peoples' affairs. She also hates it when people fight or are sad. She can fly using her large ears.

Shadow the Hedgehog: Shadow is a mysterious, black hedgehog resembling Sonic in appearance and skills. He is the Ultimate Lifeform created by Gerald Robotnik on the Space Colony ARK over fifty years ago. He recently suffered from amnesia but has regained all of his memories since. He can use Chaos Control to distort time and space.

Rouge the Bat: Rouge is a treasure hunter and a spy for G.U.N. She is full of feminine charm and can be very manipulative. She is Knuckles' rival, but secretly has a soft spot for him. Rouge wants all the jewels in the world, and her eyes partically set on the elusive Master Emerald.

Metal Sonic: A robotic version of Sonic built by Eggman to counteract the speedy hero. Metal Sonic is just as fast as Sonic and Shadow and has several unique features, such as the ablity to copy data. In Sonic Heroes, Metal Sonic betrays Eggman to conquer the world for himself, but he is stopped by Super Sonic.

Other Characters

Babylon Guardian: An ancient boss in Sonic Riders.

Babylon Rogues: A trio of bird theives who are adept at racing with Extreme Gear. The Babylon Rogues consist of Jet the Hawk, Wave the Swallow, and Storm the Albatross.

Bark: A polarbear in Championship.

Bean: An owner of an unknown bomb plant also in Championship.

Beta: A black robot in Sonic Adventure who was turned to scrap once Gamma showed him up.

Big: A laid-back tubby cat who wants to live a simple life in the forest with his pal, Froggy.

Black Doom: The main villain of Shadow the Hedgehog and the leader of the Black Arms. Considered the most powerful villain ever in the Sonic series.

Blaze: A pyrokinetic cat princess from an alternate dimension from Sonic Rush and the defender of the Sol Emeralds.

Cheese: A chao companion, and best friend, of Cream the Rabbit.

Chaos: A liquid monster that first appeared in Sonic Adventure, said to be the god of destruction. He is the guardian of all Chao creatures.

Chaotix: A team of misfits, who have started their own detective agency. The Chaotix consists of Vector the Crocodile, Espio the Chameleon and Charmy Bee.

Chocola Chao: Cheese's sibling.

Eggman Nega: Eggman's alternative counterpart in Sonic Rush.

Emerl: An ancient robot, also called the Gizoid, that can copy attacks. He first appeared in Sonic Battle.

Epsilon: A orange robot in Sonic Adventure. Gamma also destroyed him to "save him" from Dr. Eggman's control.

Delta: A blue robot that only appeared in Sonic Adventure. Gamma destroyed him to "save him" from Dr. Eggman's control.

Froggy: Big's best friend. He lives with him in the forest as they go fishing together.

Lumina Flowlight: The Queen of Maginaryland who appeared in Sonic Shuffle.

Metal Knuckles: A robotic copy of Knuckles, seen in Sonic R.

Mighty: A world-travelling armadillo who appeared in Knuckles' Chaotix.

Pachacamac: Tikal's father who appeared in Sonic Adventure.

Phi: Gray Emerls who replicate the abilities of one specific individual. Appeared in Sonic Battle.

Ray: A little squirrel, seen in SegaSonic the Hedgehog.

Silver the Hedgehog : A mysterious new character with psychic abilities, who appears in the next gen title Sonic The Hedgehog as well as Sonic Rivals as a playable character.

Tails Doll: A mysterious doll version of Tails, seen in Sonic R.

Tikal: Pacahamac's daughter who sealed Chaos in the Master Emerald in Sonic Adventure. Seems to have some sort of relation to Chaos.

'''Vanilla: Cream's mother.

Void: A short villain in Sonic Shuffle.

Zero: A trash can shaped robot in Sonic Adventure who chased Amy throughout the game, hoping to capture her.

Gameplay

2D platform games

Most Sonic titles are platform games viewed from a side-on perspective. Their controls are basic and do not deviate much from the genre standard; the selling point of the series is the sheer speed of the playable characters, who usually have the ability to run on slopes, walls, and even ceilings. Roller coaster-like loops and corkscrews are also common in Sonic games, as are giant pinball machines with flippers and bumpers which knock Sonic around like a ball. The stages are also similar to roller coasters in that many sequences involve Sonic being thrown along pre-set paths with little input from the player, which has led to criticism that the player can complete a Sonic game merely by holding the pad in one direction. However, the games also feature numerous sections involving precise jumping between platforms and avoiding of hazards, although these sections do not require "pixel-perfect" judgement and are perhaps more lenient than most platform games of the era.

In order to progress through his missions, Sonic must collect rings to protect himself from enemy robots and traps; as long as he has at least one ring he is invulnerable to dangers, although he will lose all of them if an attack does get through. Most Sonic games allow him to recover many of these scattered rings during a brief "invulnerable" period. However, rings do not protect against all hazards: he can still drown, be crushed or fall to his death. In line with many platform games, collecting 100 of these common collectables will reward Sonic with an extra life. Certain titles in the series often reward the collection of other quantities of rings; frequently, 50 must be collected in order to access the Special Stages in which the Chaos Emeralds may be obtained.

3D platform games

[[Sonic 3D: Flickies' Island]], an isometric, pseudo-3D ("2.5D") game, was released for the Mega Drive in 1996. Sega Saturn and Windows PC conversions followed, which had enhanced graphics and a different sound track, composed by Richard Jacques. Sonic 3D was developed by Traveller's Tales, although Sonic Team worked on the Special Stages in the Saturn/PC version. The Saturn version is based on the later-comin' Super Kamron World Advanced Generation (also known as Super Kamron World Super XDG).

In 1997, a compilation entitled Sonic Jam was released for the Saturn. In addition to containing Sonic the Hedgehog, Sonic 2, Sonic 3 and Sonic and Knuckles, it also included a "Sonic World" mode. This allowed the player to control Sonic in a small 3D world similar to the Green Hill Zone from the original game; it contained no enemies and was mainly a means of accessing the disc's bonus features.

The Sega Technical Institute tried to develop a "true" Sonic game for the Saturn called Sonic X-treme. This game was intended to compete with Nintendo's Super Mario 64. However, due to time constraints and issues between STI and the Japanese division of Sega and Sonic Team, the project was cancelled.

The full leap into 3D platforming was made with Sonic Adventure, a launch title for the Sega Dreamcast console. On 19 June 2001 in North America (23 June in Japan and Europe; the 10th anniversary of the US release of Sonic the Hedgehog), Sonic Adventure 2 was launched. Both of the Adventure titles were later ported to the Nintendo GameCube (under the titles of Sonic Adventure DX and [[Sonic Adventure 2#Sonic Adventure 2: Battle|Sonic Adventure 2: Battle]]) when Sega dropped out of the hardware market. DX was also ported to Windows PCs.

The first Sonic game always intended to be multiformat, Sonic Heroes, was released on the GameCube, Sony PlayStation 2 and Microsoft Xbox in December 2003 in Japan, with American and European releases following soon after, and a PC version the following November. The platforming was largely similar to that of the Adventure titles, although the player now controlled the lead character of a team of three themed characters, with the other two following closely behind. The player could switch to a new leader at any time, in order to make use of each character's special skills. It sold well, but opinions among both reviewers and fans of the Sonic series were mixed.

Shadow the Hedgehog was no different. Released in the US in November 2005, it had received several good reviews, as countless negative reviews. X-Play, for instance, had given it a 1 out of 5, making it the lowest-scoring Sonic game reviewed on the show. Other game sites such as IGN and Gamespot similarly panned the game. One of the greatest controversies revolving around this game is the gunplay; fans insisted that Shadow was the self-proclaimed "ultimate life-form" and did not need a weapon. Two other controversies were the over-use of the curse word "damn" and the fact that SEGA had decided to switch to the voice artists from the English version of Sonic X.

Other gameplay styles

A few Sonic games focus on gameplay styles other than the standard platforming. The first of these was Sonic Spinball (released on the Mega Drive in 1993 and on the Master System and Game Gear in 1994). The concept of Sonic bouncing around as the ball in a giant pinball table had been used in both Sonic the Hedgehog and Sonic the Hedeghog 2; Sonic Spinball made a whole game around that premise.

Several racing games starring Sonic characters have been developed. In Sonic Drift and Sonic Drift 2, characters rode go-karts (kart circuits were later included in the two Sonic Adventure games). In Sonic R (1998), most characters ran on foot, while in Sonic Riders (2006), they race on hoverboards.

Sonic Shuffle was a Mario Party-style virtual board game/party game for the Sega Dreamcast, but it was well-received, seemingly, by only some devoted fans of the series.

Edutainment videogames starring Sonic and Tails have also been released, such as Tails and the Music Maker for the Sega Pico, and the PC title Sonic's Schoolhouse.

On the Game Boy Advance is a fighting/platform game hybrid called Sonic Battle.

In 1993, Dr. Robotnik's Mean Bean Machine was released for the Sega Genesis. The game was basically a clone of a Japanese puzzle game named Puyo Puyo. This game was also ported to the Game Gear.

Common features

Chaos Emeralds and Special Stages

The Chaos Emeralds are a recurring feature of Sonic games. They are the basis of most of the games' plots, and the player is frequently required to collect them all in order to fully defeat Eggman and achieve the games' "good endings". The method used to acquire the Emeralds differs between titles in the series. In some games, such as Sonic R and the 8-bit versions of Sonic the Hedgehog and Sonic the Hedgehog 2, they can be found in hidden locations within the main levels. In Sonic Spinball (in which the Emeralds were, unlike most Sonic games, an essential requirement for completing the game) they could be accessed by performing specific actions and solving minor puzzles on the pinball tables that made up each level.

More frequently, a Chaos Emerald may be earned in a Special Zone or Special Stage. Special Stages usually take place in surreal environments and feature alternate gameplay mechanics to the standard platforming of the main levels: the 16-bit Sonic the Hedgehog consisted of a giant rotating maze (which many considered a major technical achievement); Sonic the Hedgehog 2, Sonic 3-D Blast, Sonic Heroes and Sonic Rush featured "in your face" segments with the hedgehog running along a long tunnel, with a slight variant involving falling down a long tube or riding the Tornado being used for Knuckles Chaotix, Sonic Advance, and Sonic Advance 3; 3-D "collect items" levels, like in Sonic 3 and Sonic & Knuckles, which used the same perspective but had Sonic collecting all the blue-coloured orbs on the surface of a giant sphere, and a different version, the 3-D ring-collecting Special Stage, used in Sonic Advance 2. Sonic Chaos (Sonic and Tails in Japan) utilised a variety of gimmicks for its levels.

Some Sonic titles include Special Stages, but not as a means of collecting Chaos Emeralds. As the Emeralds of the 8-bit version of Sonic the Hedgehog were hidden in the main stages, the game's spring-filled Special Stages were merely used as a means of adding variety, and for a player to increase their score. Similarly, Sonic 3 and Sonic & Knuckles, in addition to their main Special Stages, featured entirely optional bonus stages, one of which combined the rotating maze of the 16-bit Sonic the Hedgehog with the pinball gambling of Sonic the Hedgehog 2, and Sonic Heroes had an alternate Special Stage for earning lots of 1-UPS, very much like the one in which Chaos Emerals are collected, but with the objective being to get to the Goal Ring before time ran out, rather than catching up to the Chaos Emerald at the end of the tunnel.

Just as the design of the Special Stages has changed, so has the means of accessing them. In Sonic 3 & Knuckles, giant rings were hidden in levels to take the player to the Stages, but most other titles involve the collection of a certain number of rings, usually 50. In both the 8- and 16-bit versions of Sonic the Hedgehog, they were reached by finishing a level with more then 50 rings; in the 16-bit Sonic the Hedgehog 2, reaching a Star Post when they held this number would create a warp of stars which would take a player to the Special Stage when jumped through. Sonic 3D required the player to deliver rings to Knuckles and Tails, who could be found within each level. Sonic Chaos changed the figure, with access to a Special Stage being the reward for collecting 100 rings.

Super Sonic

Since the 16-bit version of Sonic 2, Sonic has had the ability to transform into the extremely fast and invulnerable Super Sonic once all seven Chaos Emeralds are collected. (Sonic 3 & Knuckles, with its greater emerald count, featured an even more powerful form known as Hyper Sonic.) After that, Super Sonic can be used in any of the following levels once 50 rings have been collected, although one ring is lost for every second Sonic remains in this form.

In the Sonic Adventure titles, the Special Stages were omitted entirely and Chaos Emeralds were collected in non-interactive cut-scenes as part of the story, with Super Sonic only appearing in the climactic final boss fights. This dismayed many fans, who appreciated the additional replay value offered by retrying a game's levels with Super Sonic's additional abilities. Despite several games since returning to the emerald-collecting of the 2D platform titles (including the Advance series, Heroes, and Rush), Super Sonic was again only playable at the end of the game in an extra zone.

In Sonic R, Super Sonic was the fastest racer in the game, a secret character again unlocked by collecting all the Chaos Emeralds.

In Sonic The Fighters, Super Sonic was a secret character that could only be unlocked after playing up to the final boss without losing a single round, and then entering a secret button combination.

In Sonic Riders, Super Sonic is also an unlockable character, playable outside the final level for the first time since the Sega Genesis games. As with previous games, Super Sonic consumes rings as long as the form is sustained, and Sonic reverts to standard Sonic when he runs out of rings. He is playable by unlocking the Chaos Emerald gear.

Rings

One of the most distinctive and recurring aspects of gameplay is the inclusion of collectible gold rings throughout the levels. They were initially included as a gameplay device: wounded characters would not die if they carried at least one ring, and instead they would merely lose those rings that they were carrying. However, there remained some manners of death that could not be prevented by holding a ring, including crushing, falling into a bottomless pit, and drowning. After sustaining a normal wound, a playable character will drop all the rings he or she is carrying. These rings soon disappeared if not collected again—an important function because impending damage would be less threatening since they could otherwise be picked up again at leisure.

The number of rings dropped if damage is sustained is usually much less then the number attained. In most Sonic games, the player will only drop around 20 or so rings if there are 21 or more rings (Less if there are 19 or below). However, due to technical limitations, most of the Game Gear Sonic games only dropped 5 or less rings (in most cases). This number was recently increased to about 50 Rings the player could retrieve in Sonic Rush. On the other hand, in Shadow the Hedgehog, a hit would only cost a set amount of Rings instead of the whole collection; only 10 rings from the ring count are lost per hit.

The rings are used in conjunction with the Chaos Emeralds. Usually, a collection of fifty rings are required either to access the Special Stages (where the Emeralds could be collected), or to utilise the Chaos Emeralds (i.e. by transforming Sonic into Super Sonic).

Zone rings

Whereas most rings were small and easily collectable, certain rings appeared that were much larger. The so-called "Zone rings" were designed to be jumped through, which would transport the character to the Special Zone, where the character could collect one of the Chaos Emeralds or Super Emeralds. They were used for this purpose in the games Sonic the Hedgehog, Sonic CD and Sonic the Hedgehog 3 & Knuckles (Sonic the Hedgehog 2 used Star Posts instead). In Sonic 3, if all the Emeralds had already been found, these rings could be collected for fifty rings each, allowing the characters to easily tap into the power of the Chaos Emeralds (usually becoming Super).

Music

The music of the Sonic series is considered one of its strongest aspects. Sonic games have featured tunes composed by a variety of people; Masato Nakamura of J-pop band Dreams Come True was responsible for the music of the first two 16-bit games. Ys/Streets of Rage composer Yuzo Koshiro composed the music for the first 8-bit title, barring what was taken from the 16-bit title. Sega's in-house music company, Wavemaster, did the majority of the music in later titles. One Wave Master employee, Jun Senoue, is part of the band Crush 40, and through his ties to the band they have played the main theme tunes of the two Sonic Adventure games, Sonic Heroes, and Shadow the Hedgehog. Heroes and Shadow the Hedgehog also featured other bands, such as Julien-K. Richard Jacques, a frequent composer of music for Sega's games, contributed to the soundtracks of Sonic R and the Saturn/PC version of [[Sonic 3D Blast: Flickies' Island]].

See also: List of Sonic the Hedgehog series songs

Regional variations

Note that although "Dr Eggman" has always been the antagonist's name in Japan, he was originally called "Doctor Ivo Robotnik" in North America, Europe, Australia and New Zealand before the release of Sonic Adventure; his name has since been internationally retconned to "Dr Eggman". Also, in the Japanese manuals it is said that the Mega Drive games are set on Earth, on South Island (Sonic the Hedgehog), Westside Island (Sonic the Hedgehog 2) and Angel Island (Sonic the Hedgehog 3 and Sonic and Knuckles). When these manuals were translated, the stories were changed. According to the western Mega Drive manuals, the games are set in a different worlds called Mobius. But beginning with Sonic Adventure the Japanese story became the international one.

Notes and references

External links

Official

• [Sonic Central] Official American website
• [Sonic City] Official Europe website
• [Sonic Channel] Official Japanese website

Commercial

• [Sonic the Hedgehog Series] at MobyGames
• [GameSpot: The History of Sonic]

Fan made

• [Hacking CulT] - A site with many hacks of Sonic The Hedgehog
• [The Sonic Center] Sonic series time attack competition
• [Sonic Strike Network]
• [Sonic CulT]
• [Sonic Game]
• [Sonic Retro Wiki]
• [Sonic HQ]
• [The Green Hill Zone]

• [The Sonic Stadium]

• [Sonic News Network Wikia]
• [Sonic Gear] - A digital museum of Sonic merchandise past and present

Heroes	Sonic (Super Sonic) | Tails | Knuckles | Amy Rose | Cream | Big | Chaotix | Blaze | Mighty | Tikal
Neutral/Anti-heroes	Shadow | Rouge | Silver | Chaos | E-102 Gamma | E-123 Omega | Emerl | Babylon Rogues | Guardian Unit of Nations | Gemerl
Villains	Doctor Eggman (Robotnik) | Metal Sonic | Fang the Sniper | Badniks | E-Series | King Boom Boo | Eggrobo | Biolizard | Black Arms | Black Doom
Other	Gerald Robotnik | Maria Robotnik | Chao | Princess Elise | Vanilla | Flicky | Minor characters | Aliens | Deities | Dead characters | List of all game characters
Television and comics	Sonic | Robotnik | Sonia | Manic | Queen Aleena | Snively Kintobor | Scourge | Princess Sally | Bunnie Rabbot | Rotor | Antoine D'Coolette | Freedom Fighters | King Acorn | Ixis Naugus | Julie-Su | Dimitri | Lien-Da | Dark Legion | The Brotherhood | Mammoth Mogul | Elias Acorn | House of Acorn | Mina | Anti-Freedom Fighters | Metarex | Chris Thorndyke | Cosmo | Nazo | Commander Brutus | Captain Plunder | Drakon Empire | Nutzan Bolt | Trogg | Dr. Zachary | Scratch and Grounder | Coconuts | Minor Archie characters

 

Features of Sonic the Hedgehog series

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