To make Omochao angry, pick him up and throw him around. If you throw him at an enemy, he will explode. You can even shoot him with Eggman or Tails while he is flying around your head. As Knuckles or Rouge, go through a wall while you are talking to Omochoa. He will get stuck on the other side and will not be able to get back. The third challenge Chao race is against several Omochaos. As anyone except Tails/Eggman, throw Omochao into an enemy to knock him out. With Tails/Eggman, just shoot him. He will wake up and complain or have amnesia. In Tails' Eternal Engine level, look for the area with a Chao box, a switch to open a door, and Omochao near a space escape door with two dynamite packs on it. Destroy the space door and Omochao will be sucked into space, magically reappear, get sucked out again, and repeat. Go next to Omachao and press B. You can throw it at enemies and can hear him bribe you to let him go and beg for his life.