@VinMcCarthy I'd definitely have to choose Kirara from Inuyasha. This twin-tailed cat demon is cute and powerful enough to ward off some unfavorable guests if need be.
I've always wanted a cat like Kirara since I was 9. She was one of the coolest characters of the anime, even though she had a rather small role overall.
Her demon form is also badass. Her strength grows, she's surrounded in fire, and she's still cute even with the extended canines bared.
She also can fly which is a major bonus lol