Crulk derives from the tworoot words 1."Chris" as in the first of the Bloodline 4(Crulk, CobbleMan Tha Cobbla and the Twister Twins), aka the namebringer, aka Christopher Dailey ;
2."Hulk"gamma radiated scientist Bruce banner
I'd be careful if I were you, you aren't gonna like Crulk when he's angry