▁of ▁the ▁series ' ▁major ▁ant agon ists . ▁The ▁character ▁was ▁originally ▁presented ▁as ▁a ▁low ly ▁h ag ▁who ▁had ▁en ch anted ▁Princess ▁O z ma ▁in ▁order ▁to ▁prevent ▁her ▁from ▁asc ending ▁to ▁the ▁throne . ▁M omb i ▁first ▁appears ▁The ▁Marvel ous ▁Land ▁of ▁O z , ▁when ▁T ip ▁esc apes ▁her ▁power . ▁Later ▁in ▁the ▁series , ▁L . ▁Frank ▁Ba um ▁specified ▁that ▁she ▁had ▁once ▁conquer ed ▁and ▁ruled ▁the ▁Gill ik in ▁Country ▁as ▁the ▁W icked ▁W itch ▁of ▁the ▁North ▁only ▁to ▁be ▁de posed ▁by ▁the ▁Good ▁W itch ▁of ▁the ▁North . ▁ ▁It ▁is ▁revealed ▁that ▁she ▁helped ▁install ▁the ▁W izard ▁as ▁r uler ▁of ▁O z . ▁She ▁makes ▁several ▁more ▁appearances ▁in ▁the ▁O z ▁books ▁before ▁she , ▁in ▁a ▁similar ▁fate ▁to ▁her ▁prede cess or , ▁the ▁W icked ▁W itch ▁of ▁the ▁West , ▁is ▁m elt ed ▁in ▁" The ▁Lost ▁King ▁of ▁O z ." ▁ ▁Mr . ▁Y oop ▁Mr . ▁Y oop ▁is ▁a ▁giant ▁from ▁The ▁P atch work ▁Girl ▁of ▁O z . ▁He ▁is ▁a ▁ 2 1   ft . ▁giant ▁with ▁a ▁ra ven ous ▁app et ite ▁for ▁meat ▁people ▁and ▁an ▁orange ▁mar mal ade . ▁Mr . ▁Y oop ▁a te ▁c ows ▁and ▁sheep ▁and ▁sometimes ▁knock ed ▁over ▁people ' s ▁houses ▁which ▁led ▁to ▁him ▁being ▁app reh ended ▁and ▁imprison ed ▁in