Fritz is known to be the buffest beefcake on deck, but that shouldn't discredit his intellect or his sense of honor. He wears some leather-strapped chain for armor, but it has been worked on by his twin brother Viktor to make it lighter and allow for better movement while curb-stomping fools. He loves his brother like, well, a brother, but he frequently gets into arguments with him about his sense of reckless abandon and, most frequently, who's the older twin (Fritz is older, obviously).
He was born in a family with numerous different siblings, including his twin Viktor Hancock, who he now works with in Captain Shrapnel's crew.
Fritz was taken to Archimedes by the Cult of Ke’Kauhale, but was rescued by The Destined. The last he was seen, he was still a part of the Crew of the Riddle of Lightning.