Played by Michael Sheen, Tron’s Castor is a well-known program in the Grid who runs the End of Line Club at the top of the tower in Tron City. A social hotspot where programs can find anything they want, Tron City is a nonstop dance party, company and haven of relaxation.
Tron’s Castor is one of several programs in the Tron universe, which also includes Black Guard, Clu, Gem, Jarvis, Quorra and Rinzler. Tron’s Castor is one of Gem’s allies, belonging to a group of programs known as ‘Sirens’.
Gem’s function, as with all Sirens, is to prepare programs for the games by providing fitted armour, and in Sam Flynn’s case, an identity disc.
The original computer world of MCP (Master Control Program) has now been superseded by a new virtual world on a new server. It also means that this new interior world is far more complex.
Michael Sheen as Tron’s Castor stars alongside Olivia Wilde as Quorra, Jeff Bridges as Kevin Flynn/Clu, Garrett Hedlund as Sam Flynn, James Frain as Jarvis and many more. A vivacious program, Tron’s Castor resides in his End of Line nightclub in the TRON Legacy film.