What was Jim’s title?

Im pretty sure that this question has been asked many times before, but what was Jims Title? like Deya The Deliverer, Kanjigar the Courageous, Unkar the Unfortunate, what was Jim’s? Jim the Trollhunter? or like, is is his actual title “Jim the Baby-Handed” because If I could give him a title it would be James Lake Jr. The Tenacious