Shaped like a Chao, Omochao is small, has stubby limbs, and a large head. He has a blue body and head with orange eyes, although in Chao Races where he is used as a guide his eyes are yellow. When Omochao is activated a red propeller comes out of his head, letting him achieve flight. Omochao has the ability to talk, and in Japan, or with Japanese language settings, he almost always adds "Chao" at the ends of his sentences.
Omochao can survive many injuries, including being scorched by Dr. Eggman's or Tails' cannons, being used as weapon to throw at enemies, or even being sucked into outer space. When abused, he falls unconscious for several seconds with smoke coming from his injuries. When he wakes up, he normally rambles at the player or begins to ask where he is, due to amnesia. This all happens in Sonic Adventure 2.
Omochao is featured in the games Sonic Adventure and Sonic Adventure 2 for Sega Dreamcast, Sonic Adventure DX, Sonic Adventure 2 Battle for the GameCube, Sonic Pinball Party, Sonic Battle, and Sonic Advance 3, for the Game Boy Advance, and the multi-console games Sonic Heroes, Shadow The Hedgehog, Sonic Riders and Mario And Sonic At The Olympic Winter Games.
In Sonic Adventure 2 and Sonic Heroes, Omochao was voiced by Lani Minella, while in Sonic Riders Omochao is voiced by Amy Palant.
Omochao in Garden
In Sonic Adventure, Sonic Adventure 2, Sonic Adventure 2: Battle, and Sonic Adventure DX: Director's Cut, Omochao can be brought into your garden, but only with the use of an Action Replay, or another cheating-device. He, unlike the level version, will have a wind-up key, not a propeller. It can also be noted that this is the model used for the races, karate, and the caves.
Note:To use the code above, you need to activate the master code.
Note:When you have him in your garden, he acts like a normal Chao.
- In Sonic Adventure Omochao appears in the racing stadium by the door inside the Station Square Chao Garden. It is in the Chao Races to show which direction the Chao are supposed to go, even though there is a place where a Chao can disobey directions and take a shortcut.
- In Sonic Adventure 2 Omochao replaces Tikal's hint orbs from Sonic Adventure as the in-game manual. It can be picked up and thrown as well as used to destroy enemies. When attacked, picked up, thrown, or put down, it makes remarks. Some people find it cute and useful, while others use its ability to be thrown and 'hurt' as a method of punishment for being annoying.
- Omochao also appears in Sonic Adventure 2 as a tutorial narrator, an unlockable menu theme, and the melee attack of the Chao Walker in 2-Player Battle Mode. The Dark Chao Walker uses a black and red version of Omochao named the "Dark Omochao".
- In Sonic Battle Cream plants Omochao bombs as her Trap attack.
- In Sonic Heroes Omochao is the tutorial guide in "Sea Gate" and the guide for the system screens.
- In Sonic Advance 3, Omochao appears outside of stages where he gives the player information, if the player stands beside him and presses up. He also appears during the ending, where he takes a picture of the game's heroes right before the incomplete ending credits.
- In Shadow the Hedgehog there is an unlockable "Omochao Gun" that shoots out Omochao heads (probably a joke at the anoying aspect of the robot). They have a wide range and can bounce off walls. When upgraded, the weapon is capable of killing most enemies with a single shot, and its ability to bounce off walls and take out multiple enemies in a single firing means some players prefer it even over the much-vaunted Shadow Rifle.
- In Sonic Riders, Omochao commentates on the races, and appears as a news anchor in Story Mode.
- Omochao also appears as a mag in some of the Phantasy Star Online games.
- In Sonic and the Secret Rings, Omochao appears in the multiplayer mode to help the players with some of the games.
- He's also in Mario And Sonic At The Olympic Winter Games with Tux, Chirps, Flicky, Chao and Porker.