A miniboss in Picsole Hammer, it's name is Pestellence.

On the surface, it won't be too advanced as it's an early game foe that will most likely show up later as a tougher general enemy, although I do want to give it some interesting quirks that most people won't see, like if you hit it with a status ailment inducing attack, the boss will simply toss out the rat that was afflicted, meaning that trying to burn, freeze, ect the boss will just result in more enemies to deal with. The reason for this is because I don't want elemental attacks the basically be "elemental = OP", I want it to be situational, so you have to consider what you are doing.