Retains its original name after taming. Rotmaw can only be found when its associated world quest, The Underrot: Rotmaw is active. It spawns at the back of the caverns between Elder Leaxa and Cragmaw the Infested - the first and second bosses in the dungeon.
Level scaling: Most NPCs will scale with the Hunter's level, within the constraints of their level range. Hunters can tame regular NPCs up to 2 levels higher than them, but can only tame elite NPCs of the hunter's level or below.