My nominees and some of their top sci-fi roles:
Oscar Isaac:
• Star Wars 7-9 - Poe Dameron
• Dune Part 1 - Duke Leto Atreides
• X-Men Apocalypse - Apocalypse
• MCU (Moon Knight) - all 3 Moon Knight personae
• Spider-Verse movies - Miguel O’Hara (Spider-Man 2099)
Christopher Lloyd:
• Back to the Future I-III - “Doc” Emmet Brown
• Star Trek 3 - Kruge
• Star Wars (The Mandalorian) - Commissioner Helgait
Djimon Honsou:
• MCU films (Guardians of the Galaxy, Captain Marvel) - Korath the Pursuer
• DCEU film (Aquaman) - Fisherman King
• DCEU films (Shazam 1 & 2, Black Adam) - the Wizard Shazam
• Stargate - Horus
I cannot believe no one has mentioned Bill Paxton, who is, to my knowledge, the only actor to have been killed onscreen by the Terminator, a xenomorph, AND a Predator. If that doesn’t qualify him for a spot in the genre HoF, idk what does.
Game over man!