Emerl

Emerl, as seen in Sonic Battle.

Emerl is a robot said to be a destructive weapon called the Gizoid, as discovered by Professor Gerald Robotnik. His grandson, Doctor Eggman, took him in the hopes of using him to rule the world, but tosses him aside when he finds no use for him. Sonic the Hedgehog finds him on a beach and he and his friends teach him how to fight. As the player plays the Story Mode, the player reveals abilities for Emerl to use. These abilities are the various moves known by Sonic and the other characters in the game. In the show Sonic X, Emerl is a robot named Emell (based on a mistaken/different translation from Japanese, resulting in the "r" being replaced with an "l") who learns abilities by copying those Sonic and co. use. Emerl later goes insane after absorbing the red Chaos Emerald, and is brought down by Cream the Rabbit.