Orcueid

The heroine of Tsukihime...?

Blood Starved Beast
An illusionary version of Arcueid who has fallen to her bloodlust.

Season 5
Impersonated Arcueid for a while.

Episode 2
Fought her less orc-like self.

Trivia

 * On the episode she debuted in, OP had made a roided monstrosity of a CAW for Arcueid that caught everyone off-guard. OP fixed her next episode, and the first creation was nicknamed "Orcueid".
 * This one IS THE MONSTROSITY