Who is emerl?

Emerl is a robot that first appears on the game Sonic Battle for the GBA. Eggman discovers Emerl, but Eggman couldn't get him to do anything. (Eggman couldn't form a link with Emerl!) Eggman tossed Emerl onto the beach, and Sonic finds him. Sonic forms a link with Emerl, and gets Emerl to form a link with all his friends. They use Emerl to help stop Eggman from using the Death Egg to rule over Mobius.