Groundskeeper Tyrone is a landscaper who works at Scientist Pablo's university. He is a relentless perfectionist, making sure all of the university's grass is at the same height and that all of the library's books are exactly where they belong.
Groundskeeper Tyrone is primarily orange. He wears a green jumpsuit with a matching green cap. The groundskeeper also wears gray gloves and black boots.
Tyrone has played Groundskeeper Tyrone in one episode of The Backyardigans: "Attack of the 50 Foot Worman" from season four.