Who is the Moon Knight?

Marc Spector grew up in a respected family and became a professional boxer. During a stay in the Egyptian desert, he is close to certain death. With the last of his strength he crawls into an old tomb. He makes a pact with the Egyptian god Konshu, the god of vengeance. He is now deeply indebted to God. He becomes the Moon Knight and devotes himself to the fight against injustice. Due to the power of Konshu and his equipment, which includes a suit and various weapons, Moon Knight is virtually immortal. But his psyche suffers from the transformation and after a while he realizes: Konshu will probably never release him.