Nighto is a levitating Dark Seru that somewhat resembles a Cape gooseberry. Its inner body is a small head with a large mouth and tiny arms, which is protected on all sides by a hard outer shell. Nighto will levitate toward its enemies and attack with its protective shell, either by smacking its enemy with it or drilling into its enemy's vital areas. The shell also enables Nighto to have superb defensive abilities. Nighto is also able to attack with psychic energy beams, as well as ultrasonic waves that can curse opponents.
Upon absorption, Nighto will attack with Hell's Music when summoned. It shrieks at a target and unleashes ultrasonic waves which have a chance of confusing the enemy or annihilating it outright. However, it is very possible that the attack will do nothing.