FIVE Over

FiveOver is a Powered Suit developed by Academy City. It is the "treasure" of Silvercross Alpha and its modelcase name is "Rail Gun." It has the capability of utilizing railgun methods better than the #3 esper, Misaka Mikoto.

Appearance
It looks like a 5m long praying mantis. It’s has two arms, two legs and two sickles that can fold if needed to help it standing up. Translucent wings spread out from the armour. A large cylinder-like thing used to store lots of cannons rests on its back. Also, there’re shields on the front side of the front legs, with an artificial weapon placed between these two shields.

Chronology
Kuroyoru Umidori has the dying Silvercross Alpha placed in it in order to dispatch and automatically pilot the power suit, thanks to this the FiveOver performance was greater than a simple AI controlled suit. It later pursues Hamazura Shiage, Hattori Hanzou, Kuruwa, and Fremea Seivelun into a building in a coordinate attack with other suits from Silvercross collection.

After creating an elaborate trap and using various objects, Shiage and Co. take down FiveOver by damaging the suit to the point where the AI wasn't functional anymore. When Kuroyoru attempts to kill Accelerator with thousands of artificial arms, the hijacked FiveOver fires at her and destroys practically all her equipment, this was so because Shiage had removed and replaced the control system with the Dragon Rider's suit, which allows him control of the suit.

Abilities
With its name referring to the third strongest of Academy City, its main line weapon is a Gatling Railgun. It’s an armoured suit with the replicated power of the third Level 5, and is completely based on the philosophy of ‘using only technology to create one that exceeds the original’. FiveOver can use its wings to move fast enough to leave afterimages. Currently, the Five Over has a more powerful gun than #3, but, if the two were to fight, #3 would win due to application. But in accord to the author that isn’t an absolute because science and technology will continue to advance.