Cluck (voice) / Pour Milk (voice) / Backwards (voice) / Splat Red (voice) / Scoop Sand (voice) (30 episodes)

Arnold / James (voice)

Arnold McKinnley / James Jones (voice)

Narrator (voice) (72 episodes)

Thomas (voice)

Thomas (voice)

Arnold McKinley / James Jones

Thomas (UK) (voice)

Thomas (voice)

Thomas (voice)

Foz (voice) (132 episodes)

Thomas (voice)

James / Arnold (voice)

Toot (52 episodes)

Additional Voices (voice)

James (voice) (51 episodes)

James / Professor Pickles (voice) (25 episodes)

Irving Clifford

(76 episodes)

Lee Carter (1 episode)

Jim Hawkins (voice) (26 episodes)

(90 episodes)

Stephen