Dr. Edmund Maltravers (8 Episodes)

Theo Mackenzie (8 Episodes)

Dorian Gaudain (8 Episodes)

Dr. Gabriel Lloyd (8 Episodes)

Dr. Angela Donne (8 Episodes)

Charlotte Arc (8 Episodes)

Rosalind Gaudain (8 Episodes)

Raj Puri (8 Episodes)

Jonty Millington (8 Episodes)

Angus Fergus (8 Episodes)

Dr. Linus Cooper (8 Episodes)

Maddie Talbot (8 Episodes)

Rupert (7 Episodes)

Pete Dobkin (6 Episodes)

Vigor (4 Episodes)

Avalon (voice) (4 Episodes)

Seifert (3 Episodes)

Lucinda (3 Episodes)

Mr. Pearce (3 Episodes)

Ross Bonham (2 Episodes)

Neatha MacKenzie (2 Episodes)

Lord Ravensby (2 Episodes)

Hugo (2 Episodes)

Richard Arc (1 Episodes)

D.I. Ryan Worthing (1 Episodes)

Timothy Bonham (1 Episodes)

Crispin Hunter (1 Episodes)

Mrs. Arc (1 Episodes)

David (1 Episodes)

Claudette (1 Episodes)

Barrington MacKenzie (1 Episodes)

Gethin (1 Episodes)

Korean Student (1 Episodes)