Shocking Vegeta, then both going 100% Strength. After being punished by the Powered-Up Vegeta, Goku as well went to the same form Vegeta did. Goku then, was happy that he will finally find someone he can enjoy fighting with. Goku responded and went Super Saiyan 6 according to Vegeta's Wishes, then Vegeta, shockingly went to a form surpassing a Super Saiyan 6. Goku, going Super Saiyan God, was interrupted by Vegeta, and was asked to go Super Saiyan 6. Vegeta, enraged that he felt he will never be able to surpass Goku, even after he admitted that he can't during the Buu Saga, he refused to be surpassed by such a huge gap, training in the Hyperbolic Time Chamber for over 3 Years, Vegeta asked Goku for a fight. It was revealed then that Goku (who went Super Saiyan 6) was only using 50% of his Power. Super Saiyan 6's creation was after the Battle of the Gods movie, considering that Goku will make a comeback to Beerus with an extremely powerful transformation that can brush Beerus aside like an insect and forcing his attendant, Whis (who is much more powerful than Beerus) to a fight, eventually ending up in a tie. But when serious, the character changes into a wild personality, stating that the Super Saiyan 6 cannot be defeated under any circumstances. Super Saiyan 6 eventually changes the personality of whoever uses it, into a cocky-over confident character, even Goku will turn that way. Surpassing even a Super Saiyan 5, the Super Saiyan 6, is assured to be one of the toughest and strongest transformations in all Dragon Ball Z. Considering that Super Saiyan God Goku wasn't able to beat the God of Destruction, Beerus, the Super Saiyan 6 transformation still would not be able to beat a God of Destruction, but would at least be a match.
MUGEN GOKU SSJ7 FULL
Whoever uses the Super Saiyan 6 transformation, he will be a tough opponent, as the power levels of this form is around that of a full powered Super Saiyan God. The appearance of the Super Saiyan 6 doesn't change much from a Super Saiyan 4, where instead of Red Fur, the whole upper area is covered with Golden Fur, and the hair is turned into golden like that of a Super Saiyan 3, and shaded red area under the eyes similar to Super Saiyan 4.