They've actually buffed Neco-Arc Chaos quite a bit in this game
I think giving him no hit-box and excluding him from the mission, story, network, character select screen and every other game mode really allows players to discover the sheer brilliance of this characters diverse and well thought out moves.

First we'll go over how he's not in the ♥♥♥♥♥♥♥ game, hope you enjoyed the guide and see you in the next Melty Blood title!