"This is...Saiyan Power?!"
Super Full Power Saiyan 4 Limit Breaker (超フルパワーサイヤ人４・限界突破 Chō Furu Pawā Saiya-jin Fō Genkai Toppa, lit. "Ultra Full Power Saiyan 4 Limit Breaker") is an advancement of the Super Full Power Saiyan 4 state.
In this form, the Super Saiyan 4's body is filled to the brim with ki. The normally reddish fur takes on a magenta hue, and the hair turns crimson red with dark shadows, similar in appearance to that of Super Saiyan 4 Gogeta. The user gains a flowing purple aura similar to that of Perfected Ultra Instinct, and a skin-tight white aura when the primary aura is dissipated. Even compared to the normal Super Saiyan 4 form, the voice of the user becomes deeper and calmer.
Usage and power
This form is achieved in a way similar to the Super Full Power Saiyan 4 and Super Saiyan God forms, via a Ki Transfer of several other Saiyans at once into the person, and after first attaining it the user can transform into it and untransform from it at will. It can also be achieved by incredibly powerful Saiyans through sheer power alone.
At the suggestion of Salsa and Putine during the Universe Creation Saga, Xeno Goku and Xeno Vegeta achieve this by having energy transferred to them by Super Saiyan God Xeno Trunks, Xeno Pan, Goku and Vegeta (the latter in their base forms in the manga and Super Saiyan Blue in the anime and in-game). Their fusion Xeno Vegito later uses the form to confront and fight against Dark King Fu.
In this powered-up state both Xeno Goku and Xeno Vegeta are capable of overwhelming Black Janemba individually and efficiently but even with a teamed up physical assault they are unable to defeat him due to Janemba's invulnerability towards energy lower than his. It is only after the Xeno duo combined their powers and launch a Limit Breaker Double Ultimate Dragon Fist in unison, Janemba is completely obliterated.
When Xeno Vegito uses the form against Dark King Fu, he is shown to be at a slight advantage compared to his Blue counterpart's fight against the scientist, though Dark King Fu is able to hold out against the duo by fighting strategically with his Dark Factor.
In the anime, Xeno Vegito has a disadvantage (even when teamed up with his Blue counterpart) against Broly when the berserker himself uses the Limit Breaker form, surprised that Broly managed it without help. In the manga, Xeno Vegito and Broly engage in an even clash when they both use the Limit Breaker form, before Xeno Vegito ditches the battle so that he and his counterpart (now using Blue Kaio-ken) can destroy the Universe Tree with a combined Spirit Sword.
Video Game Appearances
This form appears in Dragon Ball Heroes, where it was added in Big Bang Mission 3 as a transformation for Xeno Goku and Xeno Vegeta.
Later, Xeno Vegito was introduced in this form in Big Bang Mission 5, and Broly debuted in Big Bang Mission 6.