How to unlock Ultra SSJ Goku?

Does anyone know how to get this Ultra Goku?
Miraculously I was able to complete all challenges in the recruit event, but I only have 80/100 Z Power.

I’m playing co ops and PvP to get more Z Power, but I can’t use then since they are only for the character after it is unlocked. I’m probably missing something.

Can anyone help please?

That’s weird. You should have 100 Z power (Ultra Goku at 0 stars) after completing the recruit mission.

Try checking everything again. Maybe you missed a challenge somewhere.

You need to have proper friendship lvl with Goku dbl01-03s . Severa games in let’s fight upgrade event and it’s done :)