1. Marshmallow: Marshmallow is one of the good friends of Big Head's son. Marshmallow usually has fluffy and soft hair, which gives people a warm and cordial feeling. Kind-hearted, optimistic, and often smiling, it is the pistachio of Big Head's son and other children.
2. Xiao Ming: Xiao Ming is a good friend of another big-headed son. Usually described as a clever and witty boy, he can often come up with some interesting ideas. Xiao Ming is very good at observing and thinking, and always finds the key to the problem. Often lead the big head son to do outdoor sports with other children.
3. Little Apple: Little Apple is a lovely and lively girl, usually with bright red hair, which gives people a feeling of vitality and enthusiasm. Little Apple loves music and dance very much, and often shows her talents in front of her big-headed son and other children.