Mjölnir

Mjölnir (ミョルニル) is a magician who was at first mistaken for a spiritual item but in actuality has optimized their physical body into various the forms of the hammer.

Etymology
The name Mjölnir is the name for the legendary hammer of Thor. It's kanji reading (雷神ハンマー), refers to its relationship with the god of thunder, Thor.

Appearance
Despite being called "The Hammer", Mjölnir has various shapes but its first and most prominent appearance is that of a cylinder made of heavy stone with a diameter of 55 cm and a height of about a meter. The other forms were a sphere, a cube and finally a flat plane in the shape of a cross into a hammer. Mjölnir appears to communicate and recite spells by having countless sets of human lips both large and small appeared on its surface.

Background
The magician apparently gathered up a lot of power for an unknown reason only to have lost it in its transition for power during WWIII. With the reason to obtain strength gone, Mjölnir continued to gain power and go on a destructive path. Marian Slingeneyer, another member of GREMLIN, is responsible for its current form as a cylinder.

Homecoming Arc

 * Main article:Homecoming Arc

Mjölnir appears onboard the Radiosonde Castle as its guard and controller for dropping onto Academy City. Due to Mjölnir's inability to cope with failure, one-third of the Castle was destroyed when the technique of "throwing hammer" was unleashed. It was later thrown off the structure when Kanzaki Kaori used an anti-flight spell on it.

Hawaii Invasion Arc

 * Main article:Hawaii Invasion Arc

Another Mjölnir It's next appearance is in the aftermath of GREMLIN's invasion of Hawaii, where it is summoned shortly after Marian Slingeneyer uses her new cellphone, from there on it seen accompanying Marian Slingeneyer while she converses with Othinus. Here, it is used against Cendrillon, who despite her speed, is quickly defeated by Mjölnir's long range attacks.

Ichihanaran Festival Arc

 * Main article:Ichihanaran Festival Arc

In the eve of the festival, Mjölnir appears alongside Marian and Thor in Academy City, in order to collect Fräulein Kreutune for Othinus. Here, while Marian is completely listless after the death of Bersi back in Baggage City, Mjölnir clatters and shakes, expressing its worry towards Marian's attitude, and her dismissal of Thor's instruction on not making pre-emptive attacks.

After Fräulein escapes the Windowless Building due to Touma and Thor's efforts, Marian still remains in the bench she was resting on, but notices that the Anti-Skill are on high alert. Mairan ponders for a moment and asks Mjölnir what they should do, before ultimately disregarding it as too much of a hassle for her.

Marian finally takes action after receiving a lot of information regarding the disturbance in Academy City being related to Fräulein. She asks Thor to handle as she is unsure if she nor Mjölnir can handle her, much to the latter's chagrin. Thor tells Marian to meet up with him in a plaza in front of the District 7 station in order to have more firepower in capturing Fräulein. As Marian tries to search for Thor, she discovers a poster of a bulletin board declaring her to be a dangerous person involved in Baggage City, and that she should be reported to Anti-Skill. In truth, this was a gambit that Touma formulized, by making GREMLIN think that Academy City and Ollerus are attacking them, and Ollerus think that Academy City and GREMLIN are attacking his group. And to finish charade, Thor transforms into Marian for Touma use his picture to post in a public bulletin board, which Thor will direct Marian to. Marian tells Thor that they will have to move to a different hideout in order to take the time to analyze the situation, and she is forced to search for an abandoned building as her posters are up everywhere in the hotels, with Mjölnir following close behind Mjölnir follows Marian's way

Mjölnir is apparenly unaware that Touma was following Marian in order to draw out the scout, and activate the second phase of his trap.

Abilities

 * Strong enough to take a kick from Kanzaki Kaori without any relative problems.
 * Movement at high speeds.
 * Deployment of magical weapons of a crossbow and matchlock pistols firing projectiles at supersonic speeds just less than Kanzaki's top speed.
 * Thunder and Lighting
 * The Throwing Hammer - Using the concept of swinging the hammer, the blast of concentrated energy is brought down literally disintegrating everything in its path; this technique rivals even mobile fortresses