How did Goku turn evil?

When Goku turned ssj2 for the first time agaisnt majin Vegeta the evil inside of him formed and grew. This evil is his regular mind that got earsed since goku hit his head when he was a baby. When goku turned ssj3 agaisnt fat boo,the evil grew more and he couldn’t control it in AF.

Why is Goku Black evil?

Sickle of Sorrow – A more powerful version of the Violent Fierce God Slicer technique, attained by Goku Black after he turned his anger into power in the anime. It became capable of opening a large rift in the universe to an unknown place or time which would release an evil energy.

Is Goku Black evil?

Dubbed “Goku Black” by Future Bulma because he looks like Goku, wears black and is evil, the true identity of this villain is eventually revealed to be Zamasu, the apprentice to the Supreme Kai of Universe 10. Zamasu hails from Universe 10, where he studied to become the new Supreme Kai.