Super Dragon Ball Heroes S04E07 - The Obstructing Threat of Fu! Birth of the Miraculous Strongest Combination

Fu reveals that his new, youthful appearance is a result of his merging with Doki-Doki, which allowed him to break free of Demigra's Time Labyrinth. Goku is joined by Vegeta, Xeno Goku, and Xeno Vegeta, the latter two having also escaped from the Time Labyrinth. The alternate Broly arrives and attacks the other Saiyans, but Hearts and Cumber arrive to intercept him. Goku and Vegeta fuse back into Gogeta, while Xeno Goku and Xeno Vegeta fuse into Xeno Gogeta; they then power up to Super Saiyan Blue Evolved and Limit Breaker Super Saiyan 4, respectively, before challenging Fu. They have the advantage at first, until Fu powers up even further and hits them with a massive ki blast that forces them to defuse. Fu then teleports both Vegeta and Xeno Vegeta away, preventing the Saiyans from fusing again, before preparing to destroy Goku and Xeno Goku. The Supreme Kai of Time suddenly appears and saves the two Gokus from another blast, before using her powers to help them combine their energies. The two Gokus power up to maximum and their energies merge together, giving them a massive power boost as they prepare to battle Fu again.