Lester - A huge monkey, who is the bully of the rainforest and usually likes to beat up Mr. Whiskers. He is very stronk and likes to spend time on intellectual games, like chess or writing poetry. He is usually seen as Gaspar's bodyguard. At the end of episode 'Lack of Brains VS. Brawns' (2004) he is frightened by Brandy, so his oppression on Mr Whikers stops.

He was voiced by Bob Rubin.