Full name is, Marchesa Gata Mysteriosa, hunter of legs.
Her everyday name is Misty, derived form 'mystery cat' because she was a stray.
The title and bad Spanish is because when she was still Mystery Cat there was an old episode of Sharpe on and Sean Bean was running round a nunnery shouting, 'Marchesa'.
So it's Marchesa with a Yorkshire accent, Gata Mysteriosa with a Spanish accent and hunter of legs just because. She's stopped doing the hunting but she used to launch herself across the room and end up sort of cuddling your ankles.