They had forced you to wear a muzzle because they feared that you would try to eat someone alive or just bite them in general. You were a cannibalistic Saiyan that people did not like since you had eat one... and Sent you with one of the cruelest saiyans of them all. Goku black. It wasn't exactly fun since you were very aggressive and hostile at first, constantly scratching him, and trying to bite him whenever the muzzle was off. As time went by you had learn to accept him, You never learned to accept him at all. You were still hostile and aggressive as before, which never seemed to fade him.

One day he to take your muzzle off but his hand gripping your jaw but you somehow managed to bite part of his hand, enough to make a bit mark and draw blood from it but not enough to bite part of it off. Goku black winced slightly shaking his up and down, while Zamasu did put you muzzle back on, while he managed up Goku blacks hand.

"I told you to keep the Muzzle on their face..."

Zamasu muttered to goku black, cleaning the wound and bandaging it up.