Omochao was originally an ordinary Chao that was adopted by Jules Hedgehog after its Chao Garden was destroyed by Dr. Eggman. After spending time with Jules, it naturally altered its form to be more like Jules and so took on a robotic appearance. (StH: #173)
Omochao was later with Jules when Ixis Naugus came to offer Jules his flesh and blood body back in exchange for his loyalty. Like the rest of the family, Omochao was not pleased at Naugus presence. (StH #240)
- Making his debut in Sonic Adventure 2, Omochao served as the game's tutorial guide for newer players. Due to his trivial information and high-pitched voice, Omochao is disliked by many fans and is often considered one of the worst characters in the Sonic franchise.