The Parabolas are Levi's weapon of choice. He has about 8 behind his back. They can be used to pierce or to perform one of Levi's most powerful attacks, Levi Volta. He can also use it as a hand-to-hand weapon that can generate electricity while in use. In the Future Arc, Levi combines his parabolas with the Torpedine Fulmine's Lightning Flames to make his ultimate technique, Super Levi Volta.