Main Characters Dr. Sleech 12 main appearances Dr. Klak 8 main appearances Dr. Plowp 8 main appearances Dr. Vlam 8 main appearances Nurse Tup 8 main appearances Dr. Azel 6 main appearances
Recurring Guest Characters Additional Voices 7 guest appearances Additional Voices 7 guest appearances Additional Voices 7 guest appearances Additional Voices 6 guest appearances Additional Voices 5 guest appearances Additional Voices 4 guest appearances Additional Voices 4 guest appearances Additional Voices 3 guest appearances Additional Voices 3 guest appearances Additional Voices 3 guest appearances Additional Voices 1 guest appearances Additional Voices 1 guest appearances Additional Voices 1 guest appearances Additional Voices 1 guest appearances Additional Voices 1 guest appearances Additional Voices 1 guest appearances Additional Voices 1 guest appearances