The Rainbow City bus is generally kind, but strict on her rules for riding in her seating. She requires that all passengers keep their hands inside the bus at all times, and no food or drink. She tends to react dramatically over bad situations, shown in "Zip Zap Zooooom!."
The Rainbow City bus is primarily white with red, yellow, green, blue, purple, and magenta across her body. She has eight wheels.
When she moves, there is a squeaking noise generated by her tires.