Fusion Zamasu

Fusion Zamasu's History

Prison Planet Saga

Though thought to have been erased, Fused Zamasu was captured and sent to the Prison Planet by Fu and interned within the Core Area.

To the surprise of Goku, Fused Zamasu appears alongside the others who want Zeno destroyed and uses his telekinesis to retrieve Cumber before he and the others teleport away.

Universal Conflict Saga

In the anime, Fused Zamasu appears along with Hearts and watches his allies, Oren and Kamin, battle against Vegeta and Future Trunks. Hearts tells him that they hadn't planned on dealing with those from Universe 7 until a later time and asks Fused Zamasu to refrain from getting involved until after Zeno has been defeated. Fused Zamasu goes along with Hearts to Sadala and when Hearts mentions going to the next Universe, Fused Zamasu tells him not to order him around.

Nevertheless, Fused Zamasu goes with Hearts and the other Core Area Warriors to Universe 11. He confronts Jiren briefly with both able to dodge each other's attack. But when Jiren scrapes Fused Zamasu's hair he berates Jiren for having dared to touch a God with his filthy mortal hands. When Future Trunks sees Fused Zamasu, he attempts to slice him in half though Fused Zamasu is able to dodge the attack. Soon after, Goku appears and Fused Zamasu is stunned to see him use Ultra Instinct. Fused Zamasu attempts to attack Goku but he is stopped by Jiren, who knocks him away with a massive punch. Zamasu is hit with a large energy blast from Jiren, but the attack does no damage to him. Zamasu explains to a surprised Jiren and Top that he is immortal and charges back into battle. He continues to be overpowered but still brags about the damage having no effect on him. After Shin appears and teleports the Saiyans away, Zamasu recognizes the Supreme Kai.

Fused Zamasu along with the other members of the Core Area Warriors head to Universe 7 where they confront the Dragon Team. Zamasu soon finds himself in the midst of battle against Super Saiyan Future Trunks and shortly after Super Saiyan Vegeta as well. Trunks asks him why after previously trying to exterminate all mortals before, would he now team up with one but Zamasu refuses to answer him. Later on, he watches as Goku battles and kills Kamioren and after Hearts takes the now completed Universe Seed from them and becomes one with it, Zamasu remarks that he was eagerly waiting for that moment.

While Hearts is merging with the Universe Seed, Zamasu claims that no one will be able to stop Project Zero Mortals after he destroys Zeno and defends him from the members of the Dragon Team, taking each down with a single blow except for Goku. When Hit and Jiren unexpectedly arrive thanks to their Supreme Kai sending them there, Zamasu prepares to battle them. However, when Ultimate Hearts emerges, he paralyzes Zamasu within an energy cube and disintegrates him completely, reminding the seemingly-immortal Kai as he perishes that his plan was to destroy the gods, and Zamasu becomes his first victim.

In the manga, following the defeat of Kamioren at the hands of Jiren, Fused Zamasu heads to the now completed Universe Seed to get its power for himself. However, he is suddenly turned into glass by Lagss for his treachery and then sliced in half by Future Trunks. His now in-pieces glass body is left in the Core Area, conscious but unable to move.