Mr. Pedalpuff is a character from Fred and the Nature Gang. He is a bad neighbor and is always getting upset at Nature Cat and his friends. He only appears in Season 1 & 2. He tries to get rid of weeds in his garden and always fails. In the episode "It Came From Above" he throws a weed into the sky and it lands on Hal while he is sleeping. He also threatens to run over Squeaks and Alice with a lawn mower. He also punches Daisy.
Basically, he's just another villain.