COD:

In the "Ninjas of Doom"'s 90th game, against the "Return of the Blacksouls" Yog took one hell of a beating in his debut. He had been blocked, blitzed and fouled against, but managed to get back up almost every time. Unfortunitally, Parts of Lots of Pieces got a lucky swipe on the poor rat, and turned the lower half of his body into jelly. The Blacksouls reruited Yog shortly after Mr. Deathmoore found him a suitable lower body to use. We also allowed Parts of Lots of Pieces to keep one of Yog's arms (which is now grafted into his right arm) as a trophy. Yog didn't seem to mind.

Why he wasn't reanimated again:

Apperently Yog hadn't been hardened enough when he was recruited to the Blacksouls. His soft innards were to costly to repair in the Blacksoul's 41st game, where he was mutilated beyond all recognition.