Super Saiyan 4 Vegito(Dragon Ball GT Profile)

This is the warrior of absolute and unequaled power, Vegito, as a Super Saiyan 4. This is the assumed result of Goku and Vegeta merging bodies as Super Saiyan 4s through the Potara Earrings. Like Super Saiyan 3 Broly, Super Saiyan 4 Vegito never appeared in any of Toriyama's work, and only exists in fans' imaginations.

The distinction between SSJ4 Vegito and SSJ4 Gogeta's appearance is obvious. SSJ4 Vegito features Vegeta's everyday fighting-gloves and instead of the Metamorean-clothing that Gogeta wears, Vegito's outfit comes from the initial outfits of Goku and Vegeta's, with Goku's favorite orange gi being his inner clothes, and Vegeta's being his outer. The earrings that he has on each ear indicates that he is Vegito. Like SSJ4 Gogeta, SSJ4 Vegito features long, wild, and crimson-colored hair, but appears more upright on the upper portion of his head than Gogeta's.

We can never really tell anything about Super Saiyan 4 Vegito except his incredible might, unless Akira Toriyama makes a sequel to Dragon Ball GT where Vegito will play a major role.

Depending on when SSJ4 Vegito appears, his power may vary from weaker to its peek. We can't just say that he would automatically own everyone when he takes this form. There is a concept in the Dragon Ball Universe that says the weaker the two fusing warriors are, the weaker the resulting warrior is and the stronger the two are, the stronger the resulting being will become. Likewise, the earlier someone appears, the weaker he will be and the later he appears, the stronger he'll be. Keep in mind that most characters in Dragon Ball, particularly Goku and Vegeta, get stronger over time through training. We all know that SSJ Goku from the Frieza Saga is much weaker than SSJ Goku in the Cell Games. We also know that SSJ3 Goku from its debut is exponentially weaker than SSJ3 Goku in GT. Goku and Vegeta in GT are several times stronger than Goku and Vegeta from any Saga of Dragon Ball Z. The same Super Vegito from the Majin Buu Saga if just thrown in GT would be far weaker than Baby Vegeta or Majuub. A hypothetical GT Super Vegito would far surpass Baby Vegeta and Majuub. Even SSJ4 Gogeta is not exempt from this fact because if he actually appeared much earlier than he did during the fight with Omega Shenron, let's say during the Majin Buu Saga, then that SSJ4 Gogeta would only be the ultimate being during that time but if that same SSJ4 Gogeta was just thrown in GT through some sort of time-warper, then that SSJ4 Gogeta could be weaker than even SSJ4 Goku in GT. Therefore, if SSJ4 Vegito was ever created during the Frieza Saga for example(though it was impossible for SSJ4 Vegito to have appeared at that time as neither Goku nor Vegeta had the ability to take SSJ4), then that SSJ4 Vegito could be even weaker than the Super Vegito made in the Majin Buu Saga.

However, if SSJ4 Vegito was created during the battle with the ultimate Shadow Dragon, then that's the only time he'd own Omega Shenron. Vegito is a bit stronger than his fusion counterpart, Gogeta and because of that, we can assume that SSJ4 Vegito would be a little stronger than SSJ4 Gogeta, but not so much, although SSJ4 Vegito would have the advantage of staying fused permanently to allow him to freely play with his opponent.