Demonic Fan

Demonic Fan was a Mysterious Being of unknown origin that appears to be a sentient robotic fan.

Appearance
The Demonic Fan is a four-legged, big metallic structure. Each leg has two joints, similar to a spider and connecting each leg, is a robotic device with a giant fan attached. The fan has three blades and spins at high velocity.

Plot
After taking out the criminal Banero the Blizzard Group comes across the Mysterious Being Demonic Fan, who completely overwhelms them and their leader Miss Blizzard. Luckily for the Blizzard Group it was quickly destroyed by Miss Blizzard's sister, Tornado who then left the area with her sister. Saitama soon arrives at the scene and asks the only conscious member of the Blizzard Group about the monster. The man reveals that the Demonic Fan has been defeated. However, at that moment the Demonic Fan starts moving and quickly reassembles itself and prepares to attack. Saitama then goes on to face it but is stopped by the member of the Blizzard Group who warns him not to throw his life away, however Saitama calmly proceeds to punch the Demonic Fan into oblivion.

Abilities
It is an incredibly powerful and durable Mysterious Being whose Disaster Level is marked as Demon, indicating that it is fully capable of destroying a city.

Wind Manipulation: With its large propellers the Demonic Fan can create powerful gusts of wind that can break concrete and even create tornadoes.

Self Reassembling: It also possesses the ability to reassemble itself. Even if disassembled completely it will eventually repair itself. It can, however, be defeated if its propeller is destroyed. As such, it was no match for Saitama's inhuman strength.

Quotes

 * "VRRRRRMMMMMMMM!"