Ollerus

Ollerus (オッレルス) has been called the mage closest to becoming a "majin," a "God of Magic." He is a mysterious fellow, and one of the strongest characters in the series.

Profile
He first appeared in Volume SS2, going to Academy City in order to put across a point to the Academy City's Board of Directors - that if they misuse the "Gemstones" they took in, he will step in to stop them. He is confronted by 9 of the 10 Misaka Sisters remaining in the city, he manages to defeat them all effortlessly. He is then confronted by Sogiita Gunha, the 7th Level 5, currently on patrol as a member of Judgment. Gunha, after seeing what Ollerus did to the sisters, deems him a threat and attacks. Ollerus then uses the defensive spell called Hliðskjálf in an offensive way, which floors Gunha and knocks him down into the ground. Gunha, however, proceeds to get up without major injuries, and valiantly charges at Ollerus once again, only for the same result to occur. Gunha once again gets up and charges and though the battle cuts off there, we later learn that Ollerus was victorious and Gunha is beaten into the ground. The difference between Gunha and Ollerus' powers were so large that though Gunha took Ollerus as a serious opponent and went all out, Ollerus was only toying with Gunha.

Ollerus wields the power of the Northern Throne, and his power has been described as "incomprehensible and inexplicable. He is currently being pursued by various magical organizations seeking his power, but he has managed to elude all of them. He is in the company of Silvia, who is cruel to him on the surface but still cares for him deep down.

He has last appeared in the end of Volume 22, where he rescued an unconscious Fiamma from the snow.

Personality
Ollerus has a kind heart, he squandered the once in 10,000 year chance to become a "majin" (or magician god - one whose magical power has reached the level of divinity and can bend all natural laws) in order to save a cat. He also destroyed a human trafficking organization and saved 100 children, when he did not need to.

Abilities
He almost became a god of magic, but didn't. He have stated he have used the knowledge from a lot of grimoires (though any possible ill effects he suffered was not mentioned, it was hinted he can handle grimoires without taking damage, similar to how Index can). Until now he showed only one of his abilities in the SS2 novel:
 * Hliðskjálf (北欧王座 （フリズスキャルヴ）), it is his power to change life energy and normal magical power into an unexplainable type of power. The power by its nature cannot be described, can't be explained, and can't be comprehended. Since the power cannot be comprehended, there is no possible defense to stop it according to Ollerus. Also, the actual Hliðskjálf (which is the throne of Odin) doesn't have any offensive function, by forcefully using Hliðskjálf in offense makes his power even more unexplainable. He uses Hliðskjálf due to the fact that his own mana is too special and can't be used with normal magical powers, even if he applied knowledge of various grimoires. In other words, he needs the unexplainable energy to be used up by Hliðskjálf to prevent a build-up of mana inside him and self-destructs.