Jonathon Power | Jonathon Porritt | Jonathon Morris | Jonathon Keats | Jonathon Charlesworth | Peter Shand Kydd | Jonathon Green | Cynna Kydd | Jonathon Riley | Jonathon Dutton | Jonathon Band |
The English-language version featured the voices of Kevin Whately (Dr. Matthews), Sally Ann Marsh (nurse Kitty), Celia Imrie (Surgeon Sally), Paul Shane (the two Teds), Brian Murphy (Dr. Atticus), Julie Higginson (Clare the lab rat) and Jonathon Kydd (Arthur the lab rat).