Nightmare Noise (夏夜ノ羽音 Naitomea Noizu in Japanese, literally translating into Buzz of a Summer's Night) can only be used by Mosquito whilst he is in his Form from 400 years ago. The attack itself launches a significant number of the bats that now compose his body, while still retaining his human form, at his opponent. The speed at which these bats obtain while sent and their sheer number, result in tearing and ripping the opponent apart as they make contact with the bats razor-like shape.