Rollo the Clown is a leader clown of the birthday train. He is the leader of the Birthday Train and has a pet monkey (Jeepers). He's extremely forgetful and has a major stuttering problem. He has a good heart and likes to be social and give directions but when it comes to explaining things and normal conversations he forgets and stutters.

He has the following personalities : Forgetful, happy, positive, inspiring others, clumsy, intelligent, stupid, playful, determined