History
History:The Gundam Wiki has a much more detailed version.
Of course, the page doesn't always work on the Gundam Wiki, so I will add my own here.
Tieria was with Celestial Being very early on. He keeps his history very secret from the others, even when they begin to open up to each other. He doesn't tell the others that he's not really human at all. What he doesn't know is that he is actually a being called an Innovator. There is even information about his past that he himself doesn't know.
As a Celestial Being Gundam Meister, Tieria first pilots the Gundam Virtue, which has the ability to shed its exterior armor to reveal the Gundam Nadleeh underneath. Installed in his Gundam is the TRIAL system, which gives Tieria the ability to override and shut down any Gundam he feels is acting outside mission parameters. His ability to interface with Veda directly through a mental link and this system make him the ultimate decision maker on who's fit to pilot a Gundam, but, because pilots are apparently difficult to come by, he declares the other Meisters unfit from time to time, but never replaces them.
Tieria does not take it well whenever Celestial Being's missions come close to failure, and he handles it even worse when three new Gundams piloted by the Trinity siblings appear out of the blue to save them, claiming to be Gundam Meisters as well. He resents them and goes to Veda to find out what he can on them, but discovers he's been blocked from their information, which is encrypted to Level 7. Shocked, Tieria becomes frustrated and actually joins Setsuna and Lockon when they go after the Trinities for inciting armed conflict.
Ribbons Almark and Alejandro Corner cut off Tieria from Veda just after he discovers that he cannot access Level 7 data. Without his link, Tieria begins to show signs of humanity, softening up towards the others and even developing a wry sense of humor similar to Lockon's. However, the timing of their cutoff also left the four Gundams drifting helpless in space during a battle. Feeling that something like this might happen, the commander of the Ptolomaios, Sumeragi Lee Noriega, had her programmers, Feldt Grace and Christina Sierra, install a back up operating system in the Gundams. Virtue, however, due to Tieria's interference in attempting to reconnect to Veda, did not immediately reboot with the other three, and Lockon is gravely injured trying to protect Tieria. Tieria experiences severe guilt for this and Lockon's later death when his own attempt to protect the other pilot in return fails because Lockon managed to hack the access code Tieria locked him into his room with.
Tieria survives the final battle, injured and depressed, but later continues working with Feldt and some of the other survivors to rebuild Celestial Being and attempt to bring down the A-Laws. After finding and bringing back Setsuna, testing on the rebuilt Gundams continues until they finally have four pilots and a tactical forecaster again. Setsuna goes to recruit a new Lockon Stratos, as well as bring back Sumeragi. The three Meisters then go in and rescue Allelujah from the Federation.
During one of the first new missions, Allelujah is shot down on a remote island. During the subsequent search, Tieria meets with Regene Regetta, his genetic twin, who reveals the secrets of Tieria's past to him... including the fact that he's an Innovator, a genetically enhanced being supposed to guide humanity into the space age. Disturbed by Regene's news, Tieria insists he be part of the team to investigate the leaders of the Federation during a ball they were informed of by Wang Liu Mei. Setsuna offers to go as his backup, and Sumeragi puts the two of them undercover in disguises.
Tieria meets with Ribbons at the ball, and Ribbons lets Tieria in on what's going on with the Innovators and the A-Laws. Shocked, Tieria disagrees with the methods Ribbons is using and argues his point unsuccessfully. When Ribbons insults Lockon, Tieria takes it personally and pulls a gun, only to be attacked by Healing Care, genetic twin of Ribbons. Trapped from his only exit, Tieria turns and jumps from the window of the room to escape.
Knowing the plans of the Innovators, Tieria decides that he will continue on fighting with Celestial Being. As they return to space and are attacked again, he comes to the decision to reveal himself to the others on the Ptolomy. The crew is surprised, and Lyle questions his delay in telling them. When Tieria explains further, Sumeragi tells him that he's still their comrade, no matter what. This takes a huge burden off Tieria's conscience, even so far as getting him to smile just a little bit for the first time in two seasons of shows.
After repairs at L3 and picking up some additional crew in the form of Ian's wife and Mileina's mother, Linda, and a young woman, Anew, they are once again attacked. They return to Earth once more to meet up with Katharon forces in Europe, and Tieria finds Saji and Mileina asleep in the hangar with Seravee after extensive repairs they had performed on his Gundam with Marie Parfacy following the last battle. He puts a blanket over Mileina, carrying a second for Saji, and softly thanks her for her work. Before he can do the same for Saji, the ship goes on alert, waking the two crew members and sending Tieria off to battle once more.
During this time, the A-Laws are developing a massive orbital weapon on the orbital ring called the Momento Mori. This weapon has the ability to cause massive amounts of destruction both to targets in space and targets on Earth. Sumeragi devises a plan to use all the Gundams and their Trans-Am modes to destroy the weapon after returning to space. It requires flawless cooperation between Tieria and Lyle, the new Lockon. Up to this point, Tieria had been resentful of 'Neil's replacement'. However, he was starting to accept Lyle as Lockon by now, and, during this mission, Tieria finally calls Lyle by his full codename, Lockon Stratos. From here on, Tieria has finally accepted him as part of the team.
After this, the Ptolomy is forced to crash land on Earth during another battle with the Innovators. In this battle, Tieria fights against another Innovator. Bring Stability (Stabity? canon debate on his name here) doesn't want to fight Tieria because Tieria is an Innovator like him. However, he says there are more important things, and fights him anyway. Tieria agrees, fighting back against Bring. When Bring asks him why he's willing to attack his own kind, Tieria tells Bring that it's because he's human and not one of them, then destroys Bring's mobile suit, killing him.
After an incident where one of the pillars was attacked, the Ptolomaios II is forced to disappear for repairs and recovery. For four months, they tried to regroup, but were attacked approximately 20 times by A-Laws forces who seemed to keep finding them. When Allelujah suggests taking back control of Veda, Tieria agrees with the idea and they plot to take one of the other Innovators hostage for questioning. They capture Revive Revival, who bears a striking resemblance to Anew, and try to get information about Veda from the Innovator. Revive uses his quantum brainwaves to take control of Anew, who happens to be his twin, and has her take Mileina hostage as he attempts to capture 00 Gundam. When the crew responds by rescuing Mileina, Revive and Anew escape with the 0 Riser, but Allelujah and Setsuna F Seiei go after them. A Haro in 0 Riser distracts Revive and takes control, putting the 0 Riser into docking mode and giving Setsuna control via the 00 Gundam's system. Revive uses his weapon to blast his way out of the 0 Riser and manages to float off to a waiting shuttle piloted by Anew, and they return to the A-Laws.
A little while later, Anew, Revive and Healing return to attack them again. During the battle, Tieria had planned on performing Anew's former duties, but Sumeragi sends him off with his Gundam, saying it's more important for him to protect them that way than steer the ship. Later, Tieria finds out that Lyle and Anew had battled, and Setsuna destroyed Anew's mobile suit when it looked like she was going to kill Lyle. Lyle didn't see it that way, having been convinced Anew was going to return to the Ptolomy with him, and beat up Setsuna in retribution.
The crew receives a mysterious message, which is just a point of coordinates. Tieria questions the logic of going to unknown coordinates with no message, but Sumeragi informs him Setsuna insists on going. When Setsuna returns, he has the coordinates for VEDA. The ship heads there to take back the massive computer from the Innovators, but meets with massive resistance. During the battle, the Federation, human A-Laws, and Katharon join with Celestial Being to break through the defense Ribbons has set up around his ship containing VEDA. As he's fighting, Tieria, along with Seravee , gets pulled through the Gate.
Of course, the page doesn't always work on the Gundam Wiki, so I will add my own here.
Tieria was with Celestial Being very early on. He keeps his history very secret from the others, even when they begin to open up to each other. He doesn't tell the others that he's not really human at all. What he doesn't know is that he is actually a being called an Innovator. There is even information about his past that he himself doesn't know.
As a Celestial Being Gundam Meister, Tieria first pilots the Gundam Virtue, which has the ability to shed its exterior armor to reveal the Gundam Nadleeh underneath. Installed in his Gundam is the TRIAL system, which gives Tieria the ability to override and shut down any Gundam he feels is acting outside mission parameters. His ability to interface with Veda directly through a mental link and this system make him the ultimate decision maker on who's fit to pilot a Gundam, but, because pilots are apparently difficult to come by, he declares the other Meisters unfit from time to time, but never replaces them.
Tieria does not take it well whenever Celestial Being's missions come close to failure, and he handles it even worse when three new Gundams piloted by the Trinity siblings appear out of the blue to save them, claiming to be Gundam Meisters as well. He resents them and goes to Veda to find out what he can on them, but discovers he's been blocked from their information, which is encrypted to Level 7. Shocked, Tieria becomes frustrated and actually joins Setsuna and Lockon when they go after the Trinities for inciting armed conflict.
Ribbons Almark and Alejandro Corner cut off Tieria from Veda just after he discovers that he cannot access Level 7 data. Without his link, Tieria begins to show signs of humanity, softening up towards the others and even developing a wry sense of humor similar to Lockon's. However, the timing of their cutoff also left the four Gundams drifting helpless in space during a battle. Feeling that something like this might happen, the commander of the Ptolomaios, Sumeragi Lee Noriega, had her programmers, Feldt Grace and Christina Sierra, install a back up operating system in the Gundams. Virtue, however, due to Tieria's interference in attempting to reconnect to Veda, did not immediately reboot with the other three, and Lockon is gravely injured trying to protect Tieria. Tieria experiences severe guilt for this and Lockon's later death when his own attempt to protect the other pilot in return fails because Lockon managed to hack the access code Tieria locked him into his room with.
Tieria survives the final battle, injured and depressed, but later continues working with Feldt and some of the other survivors to rebuild Celestial Being and attempt to bring down the A-Laws. After finding and bringing back Setsuna, testing on the rebuilt Gundams continues until they finally have four pilots and a tactical forecaster again. Setsuna goes to recruit a new Lockon Stratos, as well as bring back Sumeragi. The three Meisters then go in and rescue Allelujah from the Federation.
During one of the first new missions, Allelujah is shot down on a remote island. During the subsequent search, Tieria meets with Regene Regetta, his genetic twin, who reveals the secrets of Tieria's past to him... including the fact that he's an Innovator, a genetically enhanced being supposed to guide humanity into the space age. Disturbed by Regene's news, Tieria insists he be part of the team to investigate the leaders of the Federation during a ball they were informed of by Wang Liu Mei. Setsuna offers to go as his backup, and Sumeragi puts the two of them undercover in disguises.
Tieria meets with Ribbons at the ball, and Ribbons lets Tieria in on what's going on with the Innovators and the A-Laws. Shocked, Tieria disagrees with the methods Ribbons is using and argues his point unsuccessfully. When Ribbons insults Lockon, Tieria takes it personally and pulls a gun, only to be attacked by Healing Care, genetic twin of Ribbons. Trapped from his only exit, Tieria turns and jumps from the window of the room to escape.
Knowing the plans of the Innovators, Tieria decides that he will continue on fighting with Celestial Being. As they return to space and are attacked again, he comes to the decision to reveal himself to the others on the Ptolomy. The crew is surprised, and Lyle questions his delay in telling them. When Tieria explains further, Sumeragi tells him that he's still their comrade, no matter what. This takes a huge burden off Tieria's conscience, even so far as getting him to smile just a little bit for the first time in two seasons of shows.
After repairs at L3 and picking up some additional crew in the form of Ian's wife and Mileina's mother, Linda, and a young woman, Anew, they are once again attacked. They return to Earth once more to meet up with Katharon forces in Europe, and Tieria finds Saji and Mileina asleep in the hangar with Seravee after extensive repairs they had performed on his Gundam with Marie Parfacy following the last battle. He puts a blanket over Mileina, carrying a second for Saji, and softly thanks her for her work. Before he can do the same for Saji, the ship goes on alert, waking the two crew members and sending Tieria off to battle once more.
During this time, the A-Laws are developing a massive orbital weapon on the orbital ring called the Momento Mori. This weapon has the ability to cause massive amounts of destruction both to targets in space and targets on Earth. Sumeragi devises a plan to use all the Gundams and their Trans-Am modes to destroy the weapon after returning to space. It requires flawless cooperation between Tieria and Lyle, the new Lockon. Up to this point, Tieria had been resentful of 'Neil's replacement'. However, he was starting to accept Lyle as Lockon by now, and, during this mission, Tieria finally calls Lyle by his full codename, Lockon Stratos. From here on, Tieria has finally accepted him as part of the team.
After this, the Ptolomy is forced to crash land on Earth during another battle with the Innovators. In this battle, Tieria fights against another Innovator. Bring Stability (Stabity? canon debate on his name here) doesn't want to fight Tieria because Tieria is an Innovator like him. However, he says there are more important things, and fights him anyway. Tieria agrees, fighting back against Bring. When Bring asks him why he's willing to attack his own kind, Tieria tells Bring that it's because he's human and not one of them, then destroys Bring's mobile suit, killing him.
After an incident where one of the pillars was attacked, the Ptolomaios II is forced to disappear for repairs and recovery. For four months, they tried to regroup, but were attacked approximately 20 times by A-Laws forces who seemed to keep finding them. When Allelujah suggests taking back control of Veda, Tieria agrees with the idea and they plot to take one of the other Innovators hostage for questioning. They capture Revive Revival, who bears a striking resemblance to Anew, and try to get information about Veda from the Innovator. Revive uses his quantum brainwaves to take control of Anew, who happens to be his twin, and has her take Mileina hostage as he attempts to capture 00 Gundam. When the crew responds by rescuing Mileina, Revive and Anew escape with the 0 Riser, but Allelujah and Setsuna F Seiei go after them. A Haro in 0 Riser distracts Revive and takes control, putting the 0 Riser into docking mode and giving Setsuna control via the 00 Gundam's system. Revive uses his weapon to blast his way out of the 0 Riser and manages to float off to a waiting shuttle piloted by Anew, and they return to the A-Laws.
A little while later, Anew, Revive and Healing return to attack them again. During the battle, Tieria had planned on performing Anew's former duties, but Sumeragi sends him off with his Gundam, saying it's more important for him to protect them that way than steer the ship. Later, Tieria finds out that Lyle and Anew had battled, and Setsuna destroyed Anew's mobile suit when it looked like she was going to kill Lyle. Lyle didn't see it that way, having been convinced Anew was going to return to the Ptolomy with him, and beat up Setsuna in retribution.
The crew receives a mysterious message, which is just a point of coordinates. Tieria questions the logic of going to unknown coordinates with no message, but Sumeragi informs him Setsuna insists on going. When Setsuna returns, he has the coordinates for VEDA. The ship heads there to take back the massive computer from the Innovators, but meets with massive resistance. During the battle, the Federation, human A-Laws, and Katharon join with Celestial Being to break through the defense Ribbons has set up around his ship containing VEDA. As he's fighting, Tieria, along with Seravee , gets pulled through the Gate.