Known for being a polymath, 404 is extremely skilled in a variety of fields, including particle physics and genetics. He's said to have worked for some of the most advanced organizations and gone into deep space in highly secretive missions.
Rumor has it he was the seventeenth member of the Warp Squad, though no proof of this exists. He disappeared around the same time the other members vanished.
Before his disappearance, he took with him highly secretive mission files related to his last expedition. His whereabouts are unknown to this day, and his identity has never been revealed. Numerous attempts have been made to locate him to no avail.
There are currently multiple bounties placed on his head by various organizations looking to secure the classified documents.