The Lesser Demon is an enemy in Crisis Core -Final Fantasy VII-.
Make sure that Zack is equipped with a Blaze Armlet to nullify the damage from its Fire-based attacks. Hit the Demon with Costly Punch or another strong Command Materia, and do not use any Fire-elemental attacks as it will heal the Demon. Otherwise, use the combination of Graviga and Assault Twister+ to defeat it. Prepare to roll through its Energy and Dive Bomb attacks at all times. When paired with other enemies, particular the Emperor Sahagin, defeat it quickly.
demon is "an evil spirit or devil, especially one thought to possess a person or act as a tormentor in hell."A