The Three Idiots
Note: I finally got the names of the Three Idiots correct.
Tsumemaru's Psychic Device: Demon Claw
How it works: It is attached to the hand and looks like a huge metal claw which can smash into or cut the enemy. When mastered, it can be as sharp as the Adamantium Blade/ Kougon Anki.
Kuchibashimaru's Psychic Device: Beak King
How it works: It looks like a pincer attached to a chain. When thrown at an enemy, the pincer is able to grab hold of an object/enemy and grip them tightly or squeeze them to death. The chain can also be used the wrap around objects.
Hanemaru's Psychic Device: Flying Blades
How it works: They are attached to the user's back and allow him/her to fly at supersonic speeds. The feathers can also be used to throw at the enemy like daggers.
Sorry I have such short descriptions of the devices, but really, the Three Idiots were so incompetent that they didn't really do much with their devices.