In case you needed another reason to watch Stephen Colbert take over The Late Show from David Letterman, the comedic brilliance of Brian Stack is going to be part of Colbert’s team.

Much of the absurdist fun that Conan O’Brien has had over the years in his various versions of his show heavily feature one Brian Stack in a multitude of ridiculous characters including Frankenstein, the voice of Wiki Bear, a traveling salesman, and many more.

Announced yesterday, Stack’s last episode of Conan will be tonight and he will then be taking off to bring his genius to The Late Show with Stephen Colbert and that show will be all the better for it.

Stack is the sort of guy that will probably get a great tribute montage of his best moments on Conan very soon.