Gogeta's History
Universal Conflict Saga
Finding themselves overwhelmed in the face of Ultimate Godslayer Hearts' power, Goku and Vegeta opt to fuse into Gogeta in the hopes they can match his strength. After his fusion succeeds, in the anime, Gogeta disregards Hearts' claim of superiority and simply smirks, voicing his desire to have some fun and then transforms into a Super Saiyan Blue, approaching Hearts and throwing a punch that Hearts initially catches but Gogeta powers through to land the punch. Hearts is forced to power up further and the two engage in combat. Gogeta quickly displays the advantage, dodging multiple of Hearts' gravity-augmented punches before redirecting the force of one back into Hearts' shoulder, dealing significant damage. With the Godslayer retreating behind a barrage of energy blasts, Gogeta closes the gap to deliver another punch, then fakes Hearts out with a flying knee to use his other knee to land a hard blow.
After Gogeta lands the attack on Hearts, the Godslayer compliments his strength and even attempts to persuade Gogeta to join him in his fight against Zeno for the true freedom of mankind, declaring that despite Gogeta's increase in power, the fusion still falls short in comparison to him. Gogeta replies that Hearts is the one who doesn't understand, retorting that he already has his freedom and that he is, in fact, stronger than Hearts. Hearts laughs off the claim and tells Gogeta that his choice is pathetic. Floating higher in the air, Hearts then summons a God Meteor into Earth's atmosphere and begins to launch it down to the ground below where everyone is immobilized but Gogeta who stands between it and devastation.
The fused warrior launches a tremendously large Big Bang Attack to hold off the God Meteor, actually stopping it in its tracks before Hearts further increases the attack's power and sends it hurtling back down at Gogeta, who counters with a Kamehameha. With neither side showing any sign of weakness, Jiren and Hit suddenly rise to assist Gogeta, greatly empowering the Kamehameha with their own energy and giving it the power to completely shatter the God Meteor.
In one final clash, Gogeta rushes Hearts, both punching each other in the face with Gogeta breaking Hearts' visor, before he dodges the following punch and shatters the gem on his chest, his aura bursting through Hearts' body, releasing the Universe Seed's energy and causing Hearts to disintegrate. Before he completely disappears, though, Hearts tells Gogeta that the world was never truly free with someone like Zeno around, capable of obliterating the universe with one thought, and that he his goal was just to liberate the world from that lack of freedom. After praising Goku and Vegeta's (and Gogeta's by extension) limit-breaking power and expressing his fondness for mortals because of it, Hearts finally fades from reality, leaving Gogeta as the victor.
With the universes safe once again, Hit and Jiren question why Goku and Vegeta never bothered to fuse into Gogeta during the Tournament of Power due to his tremendous strength, though Gogeta comically defuses during his response and Vegeta finishes his statement by snarking that he didn't want to fuse with a buffoon.
In the manga, however, after being overpowered by Ultimate Godslayer Hearts, Goku and Vegeta were initially unable to perform the Fusion Dance due to a gigantic gravity cube set by Hearts (who was launching the God Meteor at them) that was restricting and limiting their ability to move freely and lowering their chances to effectively align. Though Vegeta opted to use the Potara for an easier fusion method, Supreme Kai Fuwa had already given Kale and Caulifla his earrings prior. Without any other options, Goku and Vegeta were forced to perform the Fusion Dance. Fortunately, Jiren and Hit - who were also trapped in the same gravity cube - bought the duo time, with the former unleashing his Super Full Power and using his ki to repel the gravitational force and allow Goku and Vegeta to move, and the latter confronting Hearts himself and using Time-Skip and Time Prison to stall the Godslayer out. This allowed the Super Saiyan Blue Saiyans to fuse and Super Saiyan Blue Gogeta successfully took form.
Much like in the anime, Gogeta proves to a notable advantage over Hearts, saving Hit in the nick of time after being summoned through the Fusion, quickly stepping in to take on Hearts instead and calmly asking him to show him the power of the Universe Seed he is so proud of.
Gogeta deals Hearts two rapid blows to the face, one of which sends him toward the ground, allowing the fusion to follow up with a kicking barrage that Hearts, despite knowing the direction of each blow, can't seem to keep up with. With the Godslayer noticeably taking some damage and his stamina seemingly depleting, Gogeta demonstrates his superiority over Hearts by simply mocking his inability to keep up with him, despite the fact he is likely hearing his thoughts. Fuming, Hearts quickly powers up to the full extent of his Ultimate Godslayer form and launches an array of gravity cubes at Gogeta, who effortlessly evades them until one catches him and expands into a Gravity Prison, allowing the other cubes to detonate on the fusion.
As Hearts monologues on how Gogeta doesn't understand his ideals, Gogeta emerges out of the explosion, physically unscathed and unfazed. With no real intention to understand Hearts, Gogeta prepares to fire an Ultimate Kamehameha at the Godslayer, doubting that Hearts's goals will ever be achieved with the current power he has against him.
Gogeta then fires the Ultimate Kamehameha at both Hearts and the God Meteor, dealing colossal damage to both. As Hearts is engulfed by the blast, he comments that though he finds mortals pitiful, he ought to save them and hope they find peace, but is eventually shocked that Gogeta even managed to shatter the God Meteor that he initially sent toward Earth. Though Hearts believes the outcome hasn't changed due to the chunks of the shattered God Meteor raining down upon Earth, Gogeta retorts that Earth's inhabitants aren't so weak as to allow that to happen, with Gogeta's allies shown obliterating the meteor chunks before they can land. Soundly defeated, Hearts crumbles to dust, admitting that mortals may in fact be strong enough to defy the fate the gods have given them. With the defeat of all the Core Area Warriors and the universe safe once again, Gogeta eventually defuses back to Goku and Vegeta, who reunite with their allies.
