Zaydock.

Zaydock is a supervillain the novel's main antagonist. In appearance, he appears to be part machine. His primary mission seems to be taking control of the city at any cost. His plans are sidetracked with the appearance of new superhero Skyvolt, whom he soon attempts to defeat by stealing her powers through the use of an asteroid crystal. To complete his plan, Zaydock allowed Tess to recover the crystal and recharge it. In the final battle, Zaydock displays ruthless aggression, coldly attempting to deal a crushing blow to Skyvolt by attempting to kill Garrison. Eventually Skyvolt is able to defeat Zaydock in an act of heroism, presumably killing both herself and him. While Tess is revealed to be dead, Zaydock's ultimate fate is left unknown.

First Appearance
Voltage Season 1 chapter 1 Origin