Bobo Simon is a member of the cools' fourth grade class. Bobo's most distinguishing physical feature is his Dark blue chullo hat topped with a blue puffball. One of his traits is his compulsive tendency to pissed people off, usually for no discernible reason. He leads the group known as Bobo's Gang.
While eight/ten years old in the first three episodes, he was nine years old by "Fourth Grade". He is ten years old, according to the candles on his birthday cake. He also speaks with a rather medium deep voice, which is unusual for the children. Unlike his skin, he has blue skin (which cause by Enfermedad de la piel azul/Blue skin disease). He can preform magic spells and tricks such as:
- El cristal de curación(The Healing crystal)
- 火的三重奏(Trio of fire)
- Η χειραγώγηση του μυαλού(Manipulation of the mind)
- and etc'