Pea: 9-year-old MP pupil in grade 4, who loves pranks and has no hair. I like Jay Chou with my classmates, such as smiles send us light, potatoes and onions, but I sing like a donkey.

Lao Dou: His real name is Li Dou, Doudou's father. He is bald and loves to fight peas.

Xiaoya: 9-year-old, a fourth-grade MP primary school student, sits at the same table with Doudou. She claims to have diabetes (but has never seen her take insulin) and likes to take it out on peas. She has three kinds of wigs, which the author revealed were male.

Smelly pig: It has been Doudou's pet pig since the third episode. Doudou often calls it "smelly fart pig", and its image has changed, which is simply "getting fatter and fatter". Its great-great-great-grandfather is Pig Bajie, and he likes Jay Chou as much as peas.

Teacher Zhang: The pea head teacher, a math teacher, is often breathless with peas, and is also a fan of Jay Chou.