Richard Thomson as Derrick
Yuki Matsuzaki as Garheng
Ian Mercer as Quartermaster
Gemma Ward as Tamara - First Mermaid
Tristan Laurence Perez as Spanish Fisherman
Norberto Morán as Spanish Castaway (as Norberto Moran)
Gerard Monaco as Spanish Officer
Tyrone Lopez as Spanish Soldier
Luke Roberts as Captain of the Guard
Emilia Jones as English Girl
Patrick Kennedy as English Father
Jorgelina Guadalupe Airaldi as Mermaid
Antoinette Kalaj as Mermaid (as Antoinette Nikprelaj)
Kitt Barrie as Courtroom Wench
Steve Morphew as Courtroom Heckler (as Stephen Morphew)
Alan J. Utley-Moore as Justice Smith (as Alan Utley-Moore)