HOW TO GET IT WORKING:

-The mod requires GZDoom to work.
-Simply drag the file 'GRKevinMod.pk3' to your GZDoom executable.
-When in game, open the console by pressing '~' and type "Summon Kevin" and he would get spawned in.

CREDIT:
Kevin's model was made by 'aleksiszet' on Deviant Art.