Male 9 years old Characteristics: Handsome leader of the last-place team. Always hangs out with Kuwang and is friends with him.

Male Age: 24 Characteristics: Immature and ugly. He is friends with Cheolsu and always causes trouble. The King of Planet Smash.

Female Age: 24 Characteristics: Pink-colored. Speaks in a stiff, formal tone. Being a helicopter, she can fly. She knows how to operate everything. Part of Cheolsu's team.

Male Age: 24 Characteristics: Blue-colored. He is a police car. He sometimes uses a soft tone, saying things like "Cheer up," but he is firm. Part of Cheolsu's team.

Male Age: 24 Characteristics: Red-colored. He is a bad cook. He always writes in his diary. He is a fire truck.

Male 10 years old Characteristics: Green-colored and cute. A robot who always accompanies Cheolsu. He is the truck of Cheolsu's team.

Male Age: 24 Characteristics: Yellow-colored. He is better at fixing or building things than anyone else. He is a bulldozer and very passionate.

Female 24 years old A robot belonging to the first-place team (Yeonghui's team). She is taller than MD-1.

Male 24 years old Blue's older brother. He uses polite speech and is well-mannered. A robot belonging to the first-place team (Yeonghui's team).

Female 10 years old Cheolsu's friend and the leader of the first-place team.