I'd say he's a ranger with favored enemy monstrosities
@Skeleton Man, definitely either ranger or fighter with a bunch of feats (mutations)
@Skeleton Man, Ranger with the hunter archetype, for sure. Melee based.
@Skeleton Man, maybe a Blood Hunter?
@Skeleton Man, I could also argue for a paladin
@Skeleton Man, nah, he doesn't believe in anything strongly enough for that.
@Marida Cruz, I don't know, he won't really kill stuff unless it's evil or attacks him first
@Skeleton Man, that's more of a moral code than a belief, and everybody has some level of moral code. And even then, not every interpretation of Gerald has that moral code.
@Pyvin, Xanathars Guide has a Monster Slayer ranger.
@Pyvin, Khalid drogo would be barbarian
100% not a barbarian at all but good try
Gerald is obviously a fighter
@darth dias, Blood Hunter: Order of the Mutant subclass.