Originally Neco-Arc was nothing more then a parody character for the Teach me Ciel-sensei corner. Although Ciel had a bit of an alteration with that helpful in corner as well, but not as much. Although with her being a hit in her Neco-Arc persona she got a spot in the MeltyBlood arcade mode as well due to her prestige. She also had a cohost spot in Talk 2 in Plus+Disk with Sacchin herself. Not only that, but she even had a Easter Egg Moment in Caster's Stats page as well. She's technically the mascot for the Nasuverse aside from Nasu's Mushroom Avatar.