Yacker

Yacker is a White Wisp and possibly the leader of the Wisps, in the upcoming game, Sonic Colors. Not much is known as of now, but what is revealed is that Yacker is the one that tells Sonic and Tails about Eggman's plans. He is said to be a silent guide to the world of Wisps. Yacker can be told apart from the other white Wisps because of his single curly hair.

Role
Yacker will most likely be Sonic's flying little guide throughout the game, similar to past characters such as Tikal in Sonic Adventure, Omochao in Sonic Adventure 2, Shahra the Ring Genie in Sonic and the Secret Rings, Chip in Sonic Unleashed and Caliburn in Sonic and the Black Knight. He also is the one to tell Sonic the problem with the Wisps.