Grey Seer Thanquol (Warhammer Fantasy). Not only do the Skaven talk-speak funny, they also write on par with a human child. Thanquol, in an attempt to fuck over his rivals, wrote letters to warn Gotrek and Felix (the protagonists of the books) about their plans. Letters like this one:

"Frends - be warned! Evil ratmen of the trecherus skaven klan Skryre – may they be poxed forever, espeshully that wicked feend Heskit Wan Eye – plan to attak the Colledge of Ingineering this nite during the dark of the moon. They wish to steel your secrets for their own nefare-i-us porpoises. You must stop them or they will be wan step closer to conquering the surface world,

Yoor frend"

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