Dark Green is a colossal monster resembling Green Heart, and based on the monster of the same name in Megadimension Neptunia VII. It is first found in the 5* multiplayer mission "Dark Green"
Dark Green will attack by slashing across the field using her claws on her left hand, and the spear on her right. She will also thrust the spear across the field. During the motion of some attacks, she will move away from the field where you can't attack her. She will also attack using a double energy ball attack, which can stun you for a short time. Dark Green is weak against Slice attacks, so using Slash Patches is helpful