On screen
Cast
22 credited performers
Richard Crane
Capt. Cyrus Harding
Marshall Reed
Jack Pencroft
Karen Randle
Rulu of Mercury
Artwork unavailable
Ralph Hodges
Herbert 'Bert' Brown
Gene Roth
Pirate Capt. Shard
Hugh Prosser
Gideon Spillet
Leonard Penn
Capt. Nemo
Terry Frost
Ayrton - The Wild Man
Artwork unavailable
Rusty Wescoatt
Moley - Shard Henchman
Bernie Hamilton
Neb
William Fawcett
Mr. Jackson
Artwork unavailable
George Robotham
Mercurian
Stanley Blystone
Confederate Officer
Artwork unavailable
Roy Butler
Thug in Park
Frank Ellis
Pirate
Knox Manning
Narrator (voice)
Zon Murray
Thug in Park
Frank O'Connor
Confederate Officer
Artwork unavailable
Sid Ross
Mercurian
Tom Tyler
Union Dispatch Rider
Anthony Warde
Confederate Officer
Pierre Watkin
Confederate Officer