Citadel's C22 Rat Ogres & Handler was shown in "White Dwarf 98" and a mail order release flyer. [1,2]. The Rat Ogres were also sold without the handler under this C22 product code.
C22Skaven Rat Ogres(blister example)
C22 (ROH-01)Skarr
C22 (ROH-2)Handler
C22 (ROH-3)Shiuk