Demonic Fan

Demonic Fan (扇風鬼, Senpūki) 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's and at the center of it's body is a giant fan. The fan has three blades and spins at high velocity.

A New Wind Blows
After taking out the criminal Banero the Blizzard Group comes across the Mysterious Being Demonic Fan, who completely overwhelms them and their leader Fubuki. Luckily for the Blizzard Group it was quickly destroyed by Blizzard's sister, Tatsumaki 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 smithereens.

Abilities & Powers
It is an incredibly powerful and durable machine whose Disaster Level is marked as Demon, indicating that it is fully capable of destroying a city on its own. It was able to overwhelm the entire Blizzard Group including Fubuki.

Robotic Abilities
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. Despite its abilities, it was no match for Tatsumaki's telepathic abilities or Saitama's inhuman strength.

Quotes

 * "VRRRRRMMMMMMMM!"