Cheese

Cheese the Chao is a blue neutral baby Chao, sibling of Chocola the Chao, and friend of Cream the Rabbit. Cheese wears a red bow tie. A couple of times in Sonic X, the other characters referred to Cheese as "she", but in Sonic Heroes, Cheese is identified as male. This is most likely a moot point, however, as the A-life chao of Sonic Adventure and Sonic Adventure 2 had no genders.

Cheese's first appearance was in Sonic Advance 2 for the Game Boy Advance handheld console. In the game Cheese is accompanied by Cream the Rabbit, and is a method of attack. Cheese makes another appearance in the game Sonic Heroes, in which Cheese follows Cream and helps her look for Cheese's sibling, Chocola. Cheese also appears in Sonic Advance 3, and as usual follows Cream. Cheese is also able to to turn into a Sonic, Tails, Knuckles, or Amy Chao.

Cheese the Chao is also in the newest television cartoon, Sonic X although he/she is notably larger than his/her video game self.