Tron 2.0/Characters

Son of Alan Bradley and Lora Baines-Bradley, digitized unwillingly by Ma3a to stop the infection of ENCOM.

Missing Mom: In-game emails and a flashback reveal that Lora died in a lab accident. This has driven a wedge the size of Texas between Jet and Alan.
Only Known By Their Nickname: You only learn his "legal" name from an in-game email. In the spin-off comic, he insists that even the psychiatrist call him "Jet."
Right Man in The Wrong Place: He ran down to the lab because he heard the F-Con goons kidnap his father - only to have Ma3a activate the laser.
Shell Shocked Veteran: In the Ghost in the Machine spin-off comic, we see that the Fridge Horror of cyberspace hit Jet like a speeding truck. Not only were the Programs he killed sentient beings, but he possibly killed some digitized humans as well.
Stranger in A Familiar Land: Fitting in with above. The spin-off comic almost acts as a Deconstructor Fleet on the entire franchise when it isn't just gunning for Mind Screw.

(Ma3a for short). Holder of the digitization correction algorithms.

Brain Uploading
Interface With a Familiar Face
MacGuffin Girl: Alan stored the necessary correction algorithms for the digitizer in Ma3a. F-Con wants the codes in order to put their Datawraiths into cyberspace, while Jet (and later, Alan) just want to get home safely.
Virtual Ghost

A formidable warrior program on the Game Grid, she was written by Alan to find Jet and help him out.

Action Girl: Champion of the Lightcycle arena, and well-versed in using a Rod Primitive as a crude, but nasty, melee weapon.
Heroic Sacrifice: At the re-format wall.
Robo Ship: She and Jet were attracted to one another, but there wasn't much time or circumstances in-game to do much about it.

An upgraded version of the Bit from the movie. Byte is sent by Ma3a to assist Jet.