Milk

Milk is a Chao first seen in the DS version of Sonic Colors. It was first seen being chased by Orbot and Cubot, who have mistsken him for a Wisp, in the Tropical Resort. Sonic saved him by doing a mission assigned by Orbot and Cubot. Milk was then seen with Cream and Cheese, who again were being chased by Cubot. When Sonic defeated Cubot, Cream mentioned that the Chao sisn't have a name. Tails offered to call him Tornado, but the Chao didn't like the name. Cream then said she'd call him Milk for short, which the Chao really enjoyed.

This was Milk's first, and so far only, appearance.