There's a phrase right on the tip of my mind... something about heat, and kitchens... ...
Eh, I can't quite make it connect.
I think Radrook would have made a good missionary. Not as good as Riddick, though. Seriously, just imagine the ultimate Christian conversion ala Riddick:
"Accept the Lord Jesus as your savior!"
"Huh?"
"REPENT, SINNER!!"
"Uh... okay, whatever."
"Good. Now that you have accepted Jesus Christ as your Lord and Saviour, I am going to kill you before you get the opportunity to recant."
(shoots newly converted Heathen in the head)
"I love doing God's work!"