Oscar Pender

Felix

Russ

Oliver Jr. (1 episode)

Young Oliver (3 episodes)

Oskar

Pickles (voice) (2 episodes)

Gary (1 episode)

Ethan Matthews (30 episodes)

Matthew

Ryan Dennis

Lucas (voice) (77 episodes)

Crying Boy (uncredited) (1 episode)

Mikey (uncredited) (2 episodes)

Reed

Fred (9 episodes)