Monster High (2010)
The series follows the main "ghoulfriends" (girlfriends) of the franchise such as Frankie Stein, Clawdeen Wolf, Draculaura, Lagoona Blue, Cleo de Nile, Ghoulia Yelps, and Abbey Bominable; and how they manage in the "Monster High" high school. Other characters appear throughout the series, such as the antagonist Toralei Stripe (a were-cat).
Monster High - watch online: streaming, buy or rent
Currently you are able to watch "Monster High" streaming on Tubi TV for free with ads.