Sonic & Knuckles is a 1994 platform game developed and published by Sega. Players control Sonic the Hedgehog and Knuckles the Echidna in their quests to save Angel Island; Sonic tries to prevent Doctor Robotnik from relaunching his orbital weapon, the Death Egg, while Knuckles scuffles with Robotnik's minion, EggRobo
Unlike Sonic, Knuckles is able to swim. As is typical among Sonic characters, Knuckles can roll into a ball to attack enemies. He also has an empowered "super" form:using the Chaos