Mole

Mole is an enemy that appears in Sonic Colors, its first and currently only game appearance.

Even though it only appear in Sonic Colors, it is a successor or another version of Grounder, who also appears in Sonic Colors. In the Wii version, Mole is a extremely large enemy that only appears in the ground where Sonic, using the Yellow Wisp, can clash with it. If Mole or Grounder is out of the ground, it will twitch and explode.