The Arsonist

A villain whose only apparent motivation is to burn as much as possible and watch the flames dance. Their gender and appearance is unknown due to the power armor they wear, which completely disguises their build and uses a vocal mask to hide their voice, as is how much of their abilities are part of their technology and how much are innate.

They typically are present when they set a building ablaze, but hold back and simply watch, letting robotic drones outfitted with pyrokinetic hypertechnology set the fires for them. They'll join in battle when it begins, but typically flee through a fiery teleportation effect when things turn against them.