Gear. A villain with the ability to repair, build and upgrade robots. He's the creator of the Villain Cores, and has the ultimate mission to destroy the Hero Factory to then use the Hero Parts to create his own robots.
About this creation
This is Gear. Formerly a service droid for repairing other robots, he upgraded himself until being powerful enough to be considered a threat for Hero Factory. Affected by the "Villain Virus", Gear created the Villain Cores to be able to turn other robots into servants of Viral, the greatest villain of the universe.
He's actually taller than what he looks, since he upgraded himself he's rather deformed.
He built a deadly laser in order to look more "villain like".
He also built a caparace so he became more resistant to common attacks.
It is because of him that the "Villain Factory" was created, no one could have suspected that a service droid would become so dangerous.
He likes putting random things together and seeing if it becomes useful... Right now we can't tell what he might be building, but it surely looks like a foot with a gear... hmn...