Rat Ogre

Rat Ogres are one of the most successful and special breed of mutant monstrosities cooked up by Clan Moulder, and the only one to consecutively receive rules support throughout multiple editions. They are a twisted, mutant species that resemble ordinary Skaven bulked up into giant, hulking versions of themselves - hence the name "Rat Ogres". It's unclear if they are some twisted hybrid of rat and Ogre, or if they are a strain of Skaven mutated through warpstone-based steroids and other unholy concoctions.

Rat Ogres are prone to all manner of twisted mutations and surgical implants. They are virtually mindless, but this combination of unnatural loyalty (an unheard of commodity amongst Skaven) and sheer killing power makes them greatly sought after by Skaven. Powerful warlords and Grey Seers love to have Rat Ogre bodyguards, and they are one of the deadliest field troops that Skaven can have, making them the most popular and common of Clan Moulder's creations.

There was a short-lived gaiden game in which the players took on the role of aspiring Mutators, commanding stables of Rat Ogres and other Clan Moulder beasties in pit fighting scenarios to achieve wealth and fame.

But Skaven always want something better. With The End Times, Clan Moulder has finally surpassed the Rat Ogre with the creation of Stormfiends. By mutating a will-broken Skaven slave bred to have a disproportionately large brain and physically grafting it to a Rat Ogre's body as a secondary brain, Clan Moulder created smarter yet still loyal Rat Ogres. With their bulk now supported by increased brains, they could outfit them with heavy armor and a variety of surgically implanted weapons built by Clan Skryre, from warpfire throwers to ratling guns, doomflayers to warpstone grinders.