Chocolate Milk Carton is a brown, cube shaped carton of chocolate milk. The top and bottom of their body is white, and they have a red bendy straw emerging from the top right
Chocolate Milk Carton seems to be generally emotionless. They speak in a deep, monotone voice and always maintain a straight face. Despite this, they are calm, rational, thoughtful and intelligent, such as in "M Is For Magic" when they identify that Exclamation Mark is dehydrated and tells the others where to purchase stuff