Muffin / Muffin (UK) (44 episodes, 2008-2010)
Samuel / Samuel (UK) (44 episodes, 2008-2010)
Rudy (43 episodes, 2008-2010)
Mr. Beakman / Mr. Beakman (UK) (43 episodes, 2008-2010)
Quinn / Quinn (UK) (39 episodes, 2008-2010)
Missy / Missy (UK) (38 episodes, 2008-2010)
Mrs. Billingsley / Mrs. Billingsley (UK) (38 episodes, 2008-2010)
Mr. Lovebird / Mr. Lovebird (UK) (35 episodes, 2008-2010)
Mrs. Lovebird / Mrs. Lovebird (UK) (35 episodes, 2008-2010)
Muffin / Muffin (US) (25 episodes, 2008)
Rudy / Rudy (US) (25 episodes, 2008)
Samuel Lovebird (21 episodes, 2008)
Baby Jordan (1 episode, 2008)
Elliot (1 episode, 2008)
French Crab (1 episode, 2010)
Ziggy Marley (1 episode, 2010)
Peter (1 episode, 2010)