Terror in the Tropics is a loving tribute to Poverty Row studios of the 1930s and 1940s and stars Bela Lugosi, Boris Karloff and Lon Chaney, Jr.. Feisty reporter Roz Darrow and photographer Ace Zucco travel aboard the U.S.S. Enterprise with the lovely Mary Ankers, who has been left an inheritance by a mysterious benefactor.
| Actor | Role |
|---|---|
 Bela LugosiVitus Tesla (archive footage) | Vitus Tesla (archive footage) |
 Boris KarloffMr. Wong (archive footage) | Mr. Wong (archive footage) |
 Lon Chaney Jr.Lyle Talbot (archive footage) | Lyle Talbot (archive footage) |
 Mark RedfieldArmand Tesla | Armand Tesla |
| JJennifer RouseRosalind Darrow | Rosalind Darrow |
| JJeffrey BarkerCount Vega | Count Vega |
| KKimberly HannoldMary Ankers | Mary Ankers |
| JJonathon RuckmanGrant Gardner | Grant Gardner |
| WWayne ShipleyDetective Mike Flanigan | Detective Mike Flanigan |
| LLeo DymowskiAce Zucco | Ace Zucco |
| MMarian L. ClatterbaughEdna Oliver | Edna Oliver |
| DDave EllisGeorge Carradine | George Carradine |
| RRachel Hannah EllisAngelina Weston | Angelina Weston |
| MMolly FranzLucy Weston | Lucy Weston |
| PPolly LynnMadame Ouspenskaya | Madame Ouspenskaya |
 George StoverDoctor Colin | Doctor Colin |
| CCharlie WittigMr. Buchannon - Attorney | Mr. Buchannon - Attorney |