Now that he's actually a mortal, Merus has nowhere to go but up. As evidenced by the Dragon Ball Super manga, even mortals like Master Roshi can tap into Ultra Instinct, so Merus is really no ...

Dragon Ball Super: Super Hero then went on to show him ... In a similar boat to Granolah is Merus, who acted as Goku's main partner and mentor in the Galactic Patrol Prisoner Saga.