Trevor is Neville Longbottom's pet toad. Neville always has a bad habit of losing him. He appears in LEGO Harry Potter: Years 1-4 and LEGO Harry Potter: Years 5-7. In both games, Neville can release Trevor to access tubes, enabling Neville to complete puzzles.
- There are many frogs featured in Harry Potter sets, so one of them may be Trevor. The most likely one would probably be the frog included in 4708 Hogwarts Express, as Neville loses his toad on the train.