Conan the Bacterium!
Inspired by the prose of Dr. Peter Watts, I bring you Conan the Bacterium (otherwise known as deinococcus radiodurans, "..the toughest microbial motherfucker on the planet, a microbe who laughs at hard vacuum and radiation hot enough to cook you to a cinder.")
Picture from the Wikipedia article on deinococcus radiodurans. Quote from Conan the Barbarian. Picture of Peter Watts from here, originally taken by Allan Weiss. Macro engineered with the GIMP and cheezburger.com.
I'm on crack.