Why do they Introduce Ghoulia if she is rarely in anything?

Uhh... How should I know!? I've seen a Monster High commercial and 音乐 video that DOESN'T have something to do with her. Maybe she it's because of her speech and her slow movement.

Token minority. At least in the MH universe.

Also 更多 玩偶 = 更多 money for Mattell

EDIT: Ghoulia hasn't been in TWO lines. She's almost in as many as Frankie.

Well I suppose because they thought a new charecter they could make and just didnt really have a huge amout of things they could do to use her 更多 but I wish they did use her more