One of your ocs Pokémon goes berserk for some reason, which one is most likely to have their a boss meter, theme, and how difficult would they be? Think Noble Pokémon mixed with Dark Souls Bosses!
I mean...one already does, that's his whole shtick kansgsgsjjs
Tyranitar!! Thanatos the big ass Apex inheritably evil Tyranitar. His Mega form (which I need to draw again) already does look like a Dark Soul boss!