He will transform into mui but boosted by his darkness (same atk as before but boosted by a number impossible to say and can kill zeno in this transformation)

He will lunch a powerfull and giant ki ball, able to destroy every god (exept zeno) He will lunch a powerfull kamehameha able to destroy every god (exept zeno)

Goku had fighted his evil and black au, absorbed they're power, creating a new goku, after 1000 years of killing gods he went back, vegeta was in pure rage because he abandonned chi-chi and his kids, he directly transformed into god of destruction, goku looking at him killed him, he absorbed his power, he had breaked the 4th wall to kill the original, he did and absorb his power, he become the new original, he was the true original He is a joke character/made by : christ-nsemi (you can go check him yt, write : 'mugen goku 1000 years old')

Voicelines : 'oi! your weak, i tought this was gonna be fun but eh! welp say goodbye'/'ehehehe! what's that look on your face? guess you weren't suposed to know who i am.

Ultra instinct goku mugen