Self (1 episode)

Chick (1 episode)

Officer David Tomlinson

Maurice Todd

(1 episode)

Chris (1 episode)

Sir Isaac Newton

(voice) (39 episodes)

Merlin

Badger (voice) / Toad (voice) (14 episodes)

Badger (voice) / Toad (voice) / Great White Stag (voice) (4 episodes)

Badger (voice) (2 episodes)

Badger (voice) / Great White Stag (voice) (2 episodes)

Toad (voice) (1 episode)

Rollo (voice) (1 episode)

Toad (voice) / Great White Stag (voice) (2 episodes)

Toad (voice) / Great White Stag (voice) / Bully (voice) (1 episode)

Toad (voice) / Bully (voice) (4 episodes)

Toad (voice) / Rollo (voice) / Bully (voice) (7 episodes)

Toad (voice) / Rollo (voice) (1 episode)

Dawson

Pawnshop Broker

Alphonse

Det. Sgt. Albert Adams (6 episodes)

Henry Kyle (1 episode)

Azdak

Arthur Krock Sr. / King Arthur (1 episode)

Self - Nominee (1 episode)

Baron Gaspard Beersbohm

(2 episodes)

King Awad

Rothgo (14 episodes)

Charles Thompson (1 episode)

The Captain (1 episode)

Capt. 'Swann' Lesgate

Iago

Det. Insp. Roger Hart (8 episodes)

Richard Pratt (1 episode)

Dr. Rogers

Merlin

Self (1 episode)

Kris Kringle

LeBrun (4 episodes)

Self

Dr. Henry Gropinger ( Kissinger )

Derek Stafford (2 episodes)

Harry

Harry (1 episode)

Zookeeper

Steps

Mr. Ellis (1 episode)

Noah Beal (1 episode)

Self (1 episode)

Robert Baden-Powell (1 episode)

Matthew Quick (1 episode)

Hawk Dove

Ippolit Vorobyaninov

Cracker Carstairs (1 episode)

Cracker Carstairs

Uriah Heep

Fagin

Rowing Coach

Ponsonby Hopkirk (1 episode)

Professor Jordan (1 episode)

Walter Hoskins

Walter Hoskins (1 episode)

Professor Leonardo Bastinado

German

Jasper Waxo

H. Driffold Cosgood

Police Inspector

Joe Levene (1 episode)

Prime Minister Rupert Mountjoy

Orlando

Sidney Pudney

Gabrielle

Mad Hatter

Violinist

The Unicyclist (uncredited)