Wilbur was working on a new device he was going to use during battle. At the same time he was also working on a massive machine that could explode half the city. He absolutely loved using TNT and fire.He didn’t really have any motive behind this, he was just bored. He thought it would be fun to try to get a hero’s attention

“….This damn arm gauntlet is finally done”

He sighed and put the item on his wrist