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