I have a ton of mods installed, and heavily modified most of them to tweak them to my personal liking, but the only mod I can think of that might have some files to interfere is the 'NPC Behavior and Spawn Mod' from Shitface, as it contains some of the character_....xtbl files. Then again, these do not seem to differ from the original as far as Josh/Nyteblade are concerned.