TechKnight
TechKnight, or "Tech Knight", is the title and IM username for the superhero character Xen. Xen is a genius, tech-savvy high schooler named Jake Everett who created a nearly invincible, futuristic armor suit with money from his online and offline entrepeneurships. He fights crime in his hometown - New York City - and globally, all without any recognition. 
Jake lives the normal life of a high schooler by day, but defends the innocent by night as Xen, the TechKnight.