Jason Momoa insisted on Morrison being cast as his character's father because of the latter's critically-acclaimed performance in Lee Tamahori's 1994 film Once Were Warriors, which had a profound effect on Momoa growing up. In fact, Tom's line to Atlanna in the opening scene, "I was gonna cook you some eggs", is a tribute to a similar line from Once Were Warriors.
- Morrison previously portrayed Abin Sur in Green Lantern, which also starred Mark Strong and Taika Waititi.
- Morrison worked with Ewan McGregor in Star Wars: Episode II - Attack of the Clones and Star Wars: Episode III - Revenge of the Sith.
- Morrison worked with Pedro Pascal in The Mandalorian and The Book of Boba Fett.
- Morrison previously worked with Willem Dafoe and Joe Morton in Speed 2: Cruise Control.
- Morrison worked with Dwayne Johnson in Moana.