First Seen: Sonic Colours (2010)
Yacker is a white Wisp that acts as a "silent guide" for Sonic in Sonic Colours. Unlike the other white Wisps in the game, Yacker has a large curl on top of his head, presumably signifying his higher intelligence or leadership capabilities among the other Wisps.
|Characters in the Sonic the Hedgehog game series|
|Heroes||Sonic (Super, Hyper, Darkspine, the Werehog, Excalibur) | Tails (Super) | Knuckles (Super, Hyper) | Amy Rose | Cream | Big | Blaze (Burning) | Emerl | Silver (Super) | Marine | Lumina Flowlight | Chip | Shahra | Knights of the Round Table | Caliburn | Yacker | Sticks | Avatar|
|Anti-heroes/ Neutrals||Shadow (Super) | Rouge | Espio | Charmy | Vector | Mighty | Ray | Chaos (Perfect) | E-102 Gamma | E-123 Omega | Bean | Bark | Jet | Wave | Storm | Shade | Merlina|
|Villains||Dr. Eggman | Metal Sonic (Kai, Neo, 3.0) | Mecha Sonic (Super) | Fang | Witchcart | Battle Kukku Army (15th, Speedy, Dr. Fukurokov) | Tails Doll | Metal Knuckles | E-Series | ZERO | Void | Biolizard | Gemerl | Eggman Nega | Black Doom | Angelus | Iblis | Mephiles | Solaris | Erazor Djinn | Captain Whisker | Johnny | Master Core: ABIS | Ix (Super) | Dark Gaia | King Arthur | Orbot | Cubot | Deadly Six (Zazz, Zomom, Master Zik, Zeena, Zor, Zavok) | Lyric | Hard-Boiled Heavies | Infinite|
|Teams||Sonic/Heroes | Rose | Dark | Chaotix | Babylon|
|Other||Gerald & Maria Robotnik | Froggy | Chao | Omochao | Cheese | Chocola | Vanilla | Tikal | Pachacamac | E-101 Beta | Illumina | President | G.U.N. Commander | Elise | Duke of Soleanna | Coconut Crew | Vikings | Professor Pickle | Wentos | Don Fachio | Heavy and Bomb | Tiara Boobowski | Honey | Flicky | Animals|