Theo Walkerscreen performanceTheo Walker plays Sebastian in Nosebleed.
1 linked movie guide in this sequence
FILM POSTER · NosebleedNosebleed
Sebastian
Film guide, starting point, and performer.
Sebastian appears in Nosebleed (2026), portrayed by Theo Walker. This page focuses on that specific screen performance and the movie around it.
Film guide · 1 film · 2026 · 1 performerTHE MOVIE
Sebastian on screen
One focused screen portrayal, with the performer and movie linked directly below.
Film guide · 1 film · 2026Main sequence runtime: 35m
About the scores
Scores shown are MoviHero movie-guide scores. Missing scores stay blank, and tied top scores remain tied.
- 01MoviHero score66/100MAYBE
THE PERFORMANCE
Who plays Sebastian?
Meet the performer and open their full MoviHero profile. Coverage below refers to linked movie guides in this sequence.
Theo Walkerscreen performanceWHY THE CHARACTER WORKS
What defines Sebastian
Theo Walker’s performance in Nosebleed is the center of this character page. With only one film in the current screen path, the useful comparison is between the character, the performer and the role that film asks them to play—not an invented larger timeline.
WHO TO EXPLORE NEXT
Characters connected on screen
Keep moving through the same films and screen world with a character who shares meaningful movie history.
Gráinne
Sebastian and Gráinne both appear in Nosebleed.
See NosebleedOsbsourne
Sebastian and Osbsourne both appear in Nosebleed.
See NosebleedVictor
Sebastian and Victor both appear in Nosebleed.
See Nosebleed