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Official Site: Sega

This is an alphabetical list of characters who have appeared in multiple games of Sega's video game franchise, Sonic the Hedgehog; further information on characters who have appeared in one game only may be found in that game's article.

, is a 12 year old girl. She appointed herself to be Sonic's girlfriend. Amy was not created by Sonic Team; instead, a prototype version of her appeared in the Sonic the Hedgehog manga published on September 23, 1992. Her first appearance in the games was in Sonic CD, introduced and kidnapped by Metal Sonic. Here, she had the nickname "Rosy the Rascal" and was named "Princess Sally" in the Western manuals, in order to tie in with the cartoon. After this appearance, she became known as Amy. Her first playable appearance was in Sonic Drift and Sonic Drift 2, as well as in Sonic R and Sonic the Fighters as Rosy the Rascal, and Sonic Adventure as Amy Rose. Amy's skills with her Piko Piko Hammer are second to none.

A Games Radar article called Amy's introduction "the only bitter taste" in Sonic CD, but added that "she's just a pink hedgehog here and not a whiny, annoying brat like in Sonic Adventure." In an IGN article "Smash It Up", Lucas M Thomas stated that "one of the coolest things about [Amy Rose's character] is her enormous, walloping hammer" that is often used for comedy in the series.

The Babylon Rogues are a group of avian thieves. The known members of the group include Jet the Hawk, Wave the Swallow, and Storm the Albatross. Their only appearances to date are in Sonic Riders, its sequel, Sonic Riders: Zero Gravity, and Super Smash Bros. Brawl in the form of trophies and stickers. Jet however did appear as a playable character in multiplayer in Sonic and the Black Knight as Sir Lamorak, and he has also appeared in Mario & Sonic at the Olympic Winter Games as a rival in festival mode, they will also appear in Sonic Free Riders.

E-102 Gamma has not been a contender in any CBUB matches.