is undertaker based on the WWE's Undertaker?....me being a fan of both animé and the wwe undertaker i have to wonder

no not at all, i don't think they have wwe in japan, undertaker from kuro is a person all his own ^_^

well i can tell u right now that the undertaker for black butler is younger......

No, an Undertaker is simply someone who tends to the graveyard. The animé Undertaker also works as a mortician, and Ciel's informant.

no, nope