From publisher blurb:
Undaunted Champion of the Earth!
Knightstar is an ex-marine, ex-security expert, and ex-CASTLE agent who uses alien powers accidentally gained from the Khor Empire to protect the common people of Earth from all threats, be they the Meta Nation, Faez spies, or cosmic threats.
Super Powered Legends. Because sometimes you a need a character everyone knows, even if they're meeting them for the first time.