The Butcher

Nobody really knows who he was or were was he from. Rumor goes that he was a particularly retarded Ogryn in some Imperial Guard regiment around the galaxy, and he was more bullied than what would be usual, given his stupidity. Once he snapped, killed his Commissar in his sleep and cooked his meat, serving it to the regiment as breakfast.

It doesn't really matter if this weird story is true or not, the known facts are that this nameless Ogryn was an inmate at Pristini IV penal colony, and he was particularly crafty at dealing with meat, being allowed by the local Mechanicus to serve in the kitchen and butchery of the local prison. When hell broke loose and Nurgle's touch started to affect the local inmates, the Butcher was one of the first to be blessed, becoming a pale giant with a cancerous eye pulsating at his forehead. 

More stupid than the usual Ogryn, he mostly follow the other Nurgle Ogryns around and chop any enemy to pieces with his enormous carver knife. After the battle he usually go back and use a good collection of rusty knives to cut the victims meat out, prepare it and, sometimes, cook it for him and for the other Ogryn. He also got a caestus at his left hand, mostly used to "soften" meat and break bones to extract marrow... usually with the target still alive. 
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I'm quite a fan of Diablo, mostly the first game, and couldn't pass this opportunity to convert an Plague Ogryn to look like the fucked up demon Butcher XD

His apron was made from PET plastic (Coca-cola bottles).

And he probably can't say much besides "Fresh meat!" XD