"I fight for the Users! "
Tron was created in 1982 by a ENCOM programmer named Alan Bradley as a security program for ENCOM. Soon after he was created Kevin Flynn, one of Alan's friends, tries to hack ENCOM to gain a copyright for a game he had written and Tron is captured by the Commander program Sark and the Master Control Program (MCP) who forces him to play grid games. Flynn was digitized soon after and forced to play grid games with Tron, Flynn knew how to beat the game because he created it and found a way out. After they escape they figure out that the only way to defeat the MCP and save the real world is to go to the is for Tron to get data from Alan-One his user. To do so they need to travel to the l\O tower. On their way to the tower Sark's tanks attacked them and almost killed them but Tron was saved by Flynn's girlfriend Yori and Dumont a tower guardian. He then communicated with Alan-One in the l\O tower and they headed towards the MCP on a solar sailor where they eventually meet up with Flynn.
Sark ambushes them on the solar sailor by ramming his carrier ship into them causing Tron fall out but unknown to every one he survived by hanging on to Sark's carrier ship. Flynn and Yori hung on to the solar sailor but are captured by stark who also takes Dumont away for helping Tron. Sark drains them of their energy and plans to blow up or "derez" his ship once he leaves on an escape pod. When Sark leaves on his escape pod , causing the ship to derezz, Tron climbs to it and rides it all the way to the place where the MCP is. Sark also takes Dumont with him to be absorbed by the MCP. Flynn saved Yori by giving her some of his energy while the ship was derezzing and they escaped before it was totally destroyed.
As Dumont was being absorbed by the MCP the MCP senses Tron, Sark attacks and loses in the fight but is revived by the MCP and gives him his functions making him invulnerable. Flynn distracts the MCP by jumping into his beam and made him vulnerable so Tron was able to defeat him.
When Tron defeated the MCP it started to blow up but every one got away before it blew besides Flynn but because he was a user he was returned to the real world.
Recent Past and Life as Rinzler
It was believed that Tron was derezzed after supposedly sacrificing his life in combat against Clu to defend Flynn when Clu turned on him. Unbeknownst to Kevin and the rest of the Grid at large, Tron was still alive and forming a resistance to combat Clu's rise to power. Despite his efforts, Clu still remained in power and eventually captured the program. Clu then 'repurposed' Tron for his own needs, bestowing upon him the new name of "Rinzler".
Later, after Sam Flynn's entry into the Grid, the two meet in combat during the Grid Games. Both fight in a high-paced duel which the champion ends up winning through superior skill and prowess. As Rinzler is about to kill Sam, he realizes that Sam is bleeding from a cut that he gave him. Realizing that Sam is, in fact, a user, Rinzler spares his life and brings him before Clu.
After Sam, Quorra, and Kevin stumble aboard Clu's warship, Quorra allows herself to be captured by Rinzler. During this, Kevin manages to identify him as a reprogrammed version of his old friend, 'Tron', noticing the familiar "T" on his suit. Afterwards as Rinzler is leading Quorra somewhere, Rinzler and Sam encounter each other in an epic rematch. This time, Sam manages to beat Rinzler, taking Kevin's disk. They take a shuttle and escape.
Clu, Rinzler, and his guards, then pursue the fleeing trio in Light Jets. During the breathtaking chase that ensues between Clu and his Light Jets, and the trio in the shuttle that they took from Clu's warship, Kevin manages to make eye contact with Rinzler and asks him what he has become. It is through this that Clu's reprogramming is breached and he decides to fight for Kevin and Sam, once again declaring his famous line "I fight for the users". 'Tron', had returned once more.
Almost immediately, Tron flies his Light Jet directly into Clu's, derezzing both vehicles in the process and sending them both plummeting to the Sea of Simulation. As they continue to fall to the Sea, Clu tears away Tron's spare baton. Clu then manages to escape via Light Jet created from the baton. Tron, however, falls into the Sea of Stimulation. As he starts to sink, the orange piping on his suit changes back to its original color. It is unknown if he survived the fall for certain but he is presumed dead.
Skills and Abilities
Tron being a security program was an excellent fighter and a master at all of the grid games. He is a very skilled and acrobatic fighter especially with a identity disk and is an expert with a light-cycle. As Rinzler he was also seen with dual disks in combat.