Yacker is a Wisp who was befriended by Sonic and Tails while they were on Dr. Eggman's interstellar amusement park, and together they fought to free the Wisps from being enslaved by Eggman. The full details of their adventure are not yet known, however Silver the Hedgehog appeared to be involved.
Yacker is unable to speak the same language as Sonic and Tails, so to go around this, Tails invented a translator to communicate with Yacker.
- Yacker and the Wisps are from the video game Sonic Colors: they first appeared in the comic through the games tie-in story in StH#219, though these versions were from the Another Time in Another Place zone. In Another Time in Another Place, Yacker was first seen being chased by Orbot and Cubot along with the other Wisps, luckily he was saved by Sonic the Hedgehog. (StH: #219)