What is the protagonist's name in the Black Mirror interactive film 'Bandersnatch'?

The protagonist of Black Mirror's interactive film Bandersnatch is Stefan Butler. Played by Fionn Whitehead, Stefan is a young programmer trying to turn a fantasy gamebook into an ambitious video game.

The story is set in Britain in 1984, a period associated with the rise of home computers and video-game development. Stefan takes his project to Tuckersoft, a fictional game company, where he encounters the successful programmer Colin Ritman. The film's branching choices let viewers influence Stefan's decisions and lead the narrative toward different outcomes.

Stefan's work is based on a book called Bandersnatch, written within the story by Jerome F. Davies. The title ultimately refers to the bandersnatch, a creature from Lewis Carroll's poem Jabberwocky, while the fictional game also echoes a real video-game project planned by Imagine Software in the 1980s.

Colin Ritman, Jerome F. Davies, and Peter Butler are important figures connected to Stefan's story, but none is the protagonist. Bandersnatch premiered on Netflix on December 28, 2018.