A cat version of Arcueid Brunestud who appears in the Tsukihime, Melty Blood and Carnival Phantasm series.
Neco-Arc is a feline version of Arcueid Brunestud, she is the mascot of Type-Moon and a joke character in Melty-Blood. She is almost half the size of any other character. She can summon Kinoku Nasu to a fight as her Last Arc. Neco-Arc's storyline takes place after the events of the main storyline.