Yacker

"Ok. He said his name is Yacker. And he comes from a race of beings called "Wisps"."

- Tails

Yacker (ヤッカー) is a White Wisp and ambassador of the Wisps, in the game, Sonic Colors. Yacker is the one that tells Sonic and Tails about Doctor Eggman's plans and stays with Tails for the remainder of the game, before disappearing for unknown reasons before the Asteroid Coaster stage. He is Sonic and Tails' silent guide to the world of Wisps, but he understands English very well, although he is unable to actually speak it. Yacker can be told apart from the other white Wisps because of a strand of curly "hair" on his head.

Role
Yacker essentialy does nothing in gameplay. He does, however appear on the loading screen and title screen.

Story
In the game, Yacker and a Cyan Wisp are running away from Cubot and Orbot, who are trying to capture them. Sonic, seeing everything, saves Yacker and the Cyan Wisp just as Cubot was about to catch them. He eventually makes his way to Tails while Sonic was checking out the place. When he met Tails he was trying to tell him something but Tails couldn't understand because Yacker can just make chattering noises, Tails decides to make a translator to understand him. While Tails was making it, Sonic comes and sees Yacker, Tails tells him that Yacker can help them (note that they do not know his name at this point) Sonic agrees with Yacker's help but only if Tails can get the translator right. However, the translator seems to be not so accurate with Yacker's language, sometimes translating Yacker's language with silly phrases. However, when it is translated right, Yacker could tell if it's translating right. After a little transitions, they learn his name and get a little idea on the Wisp Power. He then stays with Tails for the remainder of the game as he is mainly seen with Tails and not Sonic, but when they see each other they have a nice greeting. In the dislike for Eggman, he calls him "Baldy Nosehair", which Sonic and Tails find very amusing and funny. This gave the idea for Sonic to call him "Baldy McNosehair" and Tails said he found it so funny that he "wrote it down". At the Asteroid Coaster, Yacker disappears for unknown reasons, which leaves Tails and Sonic to worry that he might have been captured and turned into a Nega Wisp. He reappears back at the Tropical Resort, Yacker, along with some of the Wisps Sonic saved, having a party, with Sonic and Tails as the guests of honor, but the party is soon crashed when Eggman begins to fire his mind-control cannon and the Wisps, including Yacker, run away. After Sonic failed to outrun the black hole, Yacker is seen with a few other Wisps, who carry Sonic back to Earth. Yacker then flies into space, changing all the Purple and Violet Wisps back to their normal forms and gets them to stop the black hole. Afterwards, Yacker returns to Sonic and Tails to thank them for their help, gives both of them a hi-five, and leaves with the other Wisps and their planets.

Although he may not be able to talk, he simply makes noises but he has a good grasp of English and even tells Tails when his "Miles Electric" is not working and is rather big on body language.

Trivia

 * Yacker seems to have some kind of ability, which allows him to transform Nega Wisps back into normal Wisps.