Despair is an alluring trap
a door that shuts you in
Background
His story starts as he awakens in a tube and greeted by someone with purple hair and red eyes: Revive Revival, as he will eventually learn. This one tells him of Ribbons Almark and how this Ribbons—his creator, apparently—is to lead the humans to rebirth and become something not short of a God.
He despises it.
And this is Regene Regetta's train of thought as soon as he is born. As one of the Innovators—beings developed from nanotechnology with enhanced abilities, such as the ability to communicate through quantum brainwaves and adaptability to the conditions of space—Regene is to follow Aeolia Schenberg's plan of changing the world and bringing the humans under the rule of the Innovators, they who are higher than the rest. And who to lead such a revolution than Ribbons? Now, the plan should go along fine if Regene is more like Revive Revival or Hilling Care, loyal to Ribbons to the end. But he isn't.
Though even so, his unconscious states that he must follow the plan. So he puts up an obedient front and brings Louise Halevy to Ribbons, who intends to turn Louise into the first human Innovator. But he's amused when Ribbons is revealed to not be as omniscient and all-knowing as he brings himself to appear, back when Setsuna F. Seiei first activates the Twin Drives. He openly taunts Ribbons—it's too tempting to pass up, after all—asking why he doesn't know of the existence of the Twin Drives despite having access to all seven levels of Veda. Ribbons retaliates a bit later by capturing Marina, and when Regene asks why Ribbons has left the princess alone until now, Ribbons counters by pointing out that Regene already knows why. Annoying as Ribbons' response is (a frown forms on his face, but he quickly replaces it with a smirk), Regene does know why: it's because Ribbons wants Setsuna and his twin drives to appear in the battlefield.
But Regene himself is plotting something too: it's time to speed up the plan.
So he decides to meet Tieria Erde on an isolated island while the latter is searching for Allelujah Haptism. He reveals to Tieria that he is an Innovator, with a similar DNA to that of Tieria's: Base sequence pattern type 0988. Tieria's shock and disbelief amuses Regene and he chuckles and taunts Tieria, asking if Tieria really thought others like him did not exist even if he knows Tieria really doesn't. Much of Veda's information is inaccessible for Tieria because he's a Gundam Meister, right? But making fun of Tieria isn't what he's here for; he's here to set the plan into motion. So he reveals Aeolia Schenberg's plan: The first stage is to unite the world through Celestial Being, the second is to gather together humanity's will using A-LAWS, the independent military organization, and the third is to bring humans to space. To move to the third stage, a huge change must occur. Tieria demands whether he should just ignore the suffering of everyone because of this change, and Regene simply states that change goes hand-in-hand with suffering. He then attempts to entice Tieria into returning to the Innovators by stating that Tieria will be denying his reason for existence if he continued to become an obstacle to Aeolia Schenberg's plan. They will meet again, he tells the one who shares his DNA as he leaves. After all, they are connected, aren't they?
Unaware that Ribbons is witnessing Regene's deviation from the plan, Regene continues to take matters into his own hands by leaking information to Wang Liu Mei about the party that Ribbons is throwing for the A-LAWS. While Ribbons and Tieria, who is disguised as a female guest, dance, Tieria demands whether Ribbons sent Regene to find him, but Ribbons states that he was also a victim of Regene's mischief. Essentially, Tieria refuses to join the Innovators and escapes the party. Disappointed, but undeterred, Regene wonders whether Aeolia's plan is being modified because of Tieria still being attached to the first phase of the plan is due to Ribbons or Celestial Being. So he tells Ribbons that if Tieria had joined them then the plan would be accelerated, and Ribbons counters that Celestial Being needs to exist so that the A-LAWS will continue to gain the favor of the people. And what about the Twin Drives? Regene continues to ask. Have they been developed by Celestial Being, or are they part of Aeolia Schenberg's plan? Their leader—or so Ribbons claims to be—states that either way, the Gadessa is still superior to the 00 Gundam.
And so Ribbons brings out the Memento Mori to speed up the Middle Eastern plan and unify the will of mankind. Regene bluntly asks: Unify? Don't you mean standardize? But Ribbons seems to seriously believe that he is unifying the world under A-LAWS and, essentially, the Innovators. So when Bring dies by the hands of Tieria Erde, he finds it interesting that his twin chose to oppose the Innovators—those designed to watch over humanity—instead of joining them.
Ribbons continues to play out his plan of unification by bringing out a second Memento Mori to attack the AEU elevator, and he and Regene discuss that ever since technology has been discovered, humans began to use these technologies to fight against each other. Even periods of peace don't last, since those who are rightful leaders, as with all humans, eventually die. The world is thrown into chaos time and again: such is the history of humans. Regene agrees by saying that this is why the Innovators have been created: They who are not human and who have longer life spans will save humans from destruction. But Ribbons retaliates and reminds Regene that he is their creator, and that the one who will guide humans will not be the Innovators, but him.
And if there's anything Regene loathes, it's having someone tell him that he is a much lower being than another.So Ribbons still intends to be somewhat like a God, doesn't he? Regene's pride is scarred but he isn't discouraged: He will show Ribbons that the self-proclaimed leader of the Innovators is not absolute. And he can use that human, Liu Mei, again to further his plans, can he? She seems valuable enough, so he keeps her around to help him change the world, knowing that she's only agreeing due to her selfish desires. It doesn't matter what she wants, after all. In the end, it's his desire that will prevail. He will break Ribbons' plan.
Thus begins his own revolution. He meets regularly with Wang Liu Mei during the four months after the fall of the AEU orbital elevator. The thought that Ribbons might find out about his plan doesn't even cross his mind; he's movements are concealed enough, aren't they? So when Ribbons accuses Regene of scheming with Liu Mei, Regene confidently lies that he's only associating with her so that he can learn more about Celestial Being. There is no way that Ribbons can possibly be aware of his real intentions, after all.
Except Ribbons responds to Regene's lie with "Then let us assume that is true." A frown forms on Regene's face: is it possible that he knows?
But he must continue to advance his plot regardless of what Ribbons does know. And he does so by providing a bit of information to Liu Mei, something that can potentially turn the events in favor of his plan: The location to the supercomputer Veda. He instructs Liu Mei to deliver the paper with Veda's location written on it directly to Celestial Being; no one else must be able to know.
And as Revive and Anew set their plan to take the 00 Gundam away from the Ptolemaios, Ribbons states that he is the only one worthy of the 00 Gundam. Regene pretends to agree with this, but he's surprised when Ribbons slaps him and tells him that he has been too mischievous. Ribbons continues to say that Regene knows what would happen if he dare act without permission again. And that only angers Regene even more.
He'll show Ribbons that neither his nor Aeolia Schenberg's plan will prevail. And so he contacts Nena Trinity for a little job: Both Hong Long and Wang Liu Mei will soon be reaching the end of their use, so it's best to ensure that Liu Mei doesn't interfere any further. It's simple, really: Nena takes down Hong Long, and then Liu Mei after she hands the location of Veda to Celestial Being. The girl completes the first phase excellently, and as she returns to her Throne to pursue Liu Mei after she hands the paper over, he notices the 00 Raiser in the sky. It's him: Setsuna F. Seiei, the one who has the potential to become the first human Innovator.
But an enemy awaits Setsuna as he returns to the 00 Raiser: Mr. Bushido. Annoyance courses through Regene's veins; is Ribbons behind this? No matter, if Regene is right about Setsuna, then the human will have the capacity to defeat Mr. Bushido. Such is the power of a true Innovator, the one with the power to mold the fate of humanity. And Setsuna does, and Regene realizes it now: Setsuna has awakened. His plan is going along smoothly.
Celestial Being moves on to break the front-line of A-Laws' fleet, and Ribbons comments that humans truly enjoy conflict. Regene puts up a front and points out that wasn't it Ribbons who led them to this point? Ribbons then states that it should have been Regene's desire, as well.
There's something Regene doesn't like about how Ribbons phrases it. And, true enough, Ribbons says that he is still Regene's creator, so Regene's treacherous thoughts have already reached him through Quantum Brainwaves. And this angers Regene, much more than anything Ribbons has said or done before. He draws out a gun from behind, points it at Ribbons, and fires. The bullet hits him squarely in the head, and after he falls onto the ground, Regene proclaims:
"The one who will lead humans will be I, Regene Regetta!"
He laughs as he realizes that he has triumphed: Finally, Aeolia's plan will now be his. But the sense of victory is short-lived as he hears a very familiar voice telling him that his pride has gotten the better of him. Genuinely shocked, he looks around and spots Ribbons in the upper balcony, still very much alive. Ribbons explains that his consciousness is directly linked to Veda, which is why his body is a mere vessel, and that the things that are impossible for Regene are possible for him because he is the superior one. Again, the proclamation that Ribbons is superior. A surge of utmost hatred fills Regene—how dare Ribbons continue to imply such a thing!—and he draws out his gun and points, but the one that fires comes from another direction.
A look of surprise crosses his face as the blood gushes out of his chest, painting a red stain in his otherwise crisp, clean uniform. Ali Al Saachez, who had been hiding in the shadows, has shot him. He falls onto the ground, seemingly defeated by Ribbons Almark.
But not quite.
There is still other ways to fulfill the plan, of course: For instance, cooperating with Tieria Erde. And even with a dead body his consciousness manages to survive and plot out the end of Ribbons' plan: Tieria would need to claim Veda for himself and deny Ribbons access. Tieria and Ribbons thus meet in Veda's physical location, but Ribbons shoots at Tieria and kills him. It isn't as simple as that, however. Ribbons attempts to access Veda once more, but his surprise is enough to confirm that Veda has refused his link. Regene gloats at him: He won't let things go as Ribbons plans to. Isn't that right, Tieria?
Tieria responds by activating Seraphim's Trial Field and shutting down all suits directly linked to Veda: Veda has been claimed. And Setsuna, the first true Innovator, eventually manages to defeat Ribbons Almark in battle.
So in the end, he has fulfilled the purpose given to him by Aeolia Schenberg, though he believes that it is his plan that has prevailed. And even as the remaining traces of his consciousness disappears from existence, he still remains the victor this time around.