Grasshopper (voice)
Centipede (voice)
Ladybug (voice)
Aunt Spiker
Aunt Sponge / Glowworm (voice)
Old Man
Spider (voice)
James
Earthworm (voice)
Reporter #2
James' Father
Girl with Telescope
Reporter #1
Reporter #3
Woman in Bathrobe (as Kathrine Howell)
Newsboy
Hard Hat Man
Cabby
Innocent Girl
Beat Cop
James' Mother
Street Kid
Centipede (singing voice) (uncredited)
Beat Cop (uncredited)
New York Girl (uncredited)
Milkman (uncredited)
Additional Voices (voice) (uncredited)
Man in Bathrobe (uncredited)
Glowworm (singing voice) (uncredited)