I hate to admit it, but Xaul began his life as a Drizzt clone. Since then, he has become one of my favorite characters to use, and comes from many cultures.
Germanic: His name and speech styles (Knofker is actually Old High German for "knife"). Xaul's dress, as well, comes from both european fact and fantasy[u].
Indian: Xaul's weapons. While in the ToC he has only the two katars, I have also given him an urumi before. (Katars=punch daggers. Urumi= a multi-bladed sword which has blades that are as flexible as bandsaw blades.)
Middle Eastern: Resheph is actually a real god from Canaanite mythology, and has the aspects in real life that I have given him here.
Other: Xaul's actual personality owes a lot to Deadpool of Marvel Comics, as well as Heath Ledger's Joker. He is also my way to have a little fun with insanity, though.