Foldabody grants the user the ability to manipulate the thinness of their body as well as stretch their limbs.
Edgeshot can make his body completely flat and fold it into different forms. This allows him to pass through narrow spaces and move quickly while remaining undetected. He can shift his body into multiple shapes in an instant, giving him enhanced mobility, striking precision, and flexibility.
Edgeshot has evidently mastered his Quirk, and through intense training, he can transform faster than the speed of sound. He incorporates this into his Ninja style very well. Edgeshot flattens his body to pass through doors, allowing him a way into secret passages. He can transform any section of his body at will, and often flattens it into multiple shapes to pierce his opponent's organs.
Edgeshot mainly uses his Quirk to strike quickly and incapacitate his opponents. He does this by folding his body into a thin blade that pierces his opponent's body before they can even react. By cutting off the blood flow to their brain, Edgeshot can knock someone unconscious almost instantly. When Edgeshot did this against Kurogiri, Magne couldn't even fathom what happened because of the hero's speed.
Edgeshot is also capable of fighting in mid-air by folding his body into a drill-like shape and maneuvering around his target.