Neco-Arc

Neco-Arc is a Neco Spirit appearing in the Tsukihime series. She is a pint-sized cat girl parody of Arcueid Brunestud, acting as the mascot character of Type-Moon at times. In Fate/Grand Carnival, she appears as Mysterious Neco X, parodying Mysterious Heroine X/Artoria Pendragon. Neco-Arc is known as the biggest small-fry in the Cat Kingdom. Most characters are unnerved by her appearance, and she especially torments White Len, calling her a "tsundere", and Satsuki Yumizuka, who Neco-Arc constantly reminds that she doesn't have a major role in Tsukihime. She recognizes Miyako Arima as a much-awaited future rival.