Level 5

Level 5 (超能力者 (レベル5) ) is currently the highest esper level that has been accomplished in Academy City. The acquisition of this rank has only occurred seven times; only seven out of the 2.3 million students who are actively participating in the Academy City Power Curriculum Program have been assigned this rank. This indicates the level of difficulty involved with successfully being given this rank.

All of the currently known Level 5 espers have nicknames attributed to them that are either the same as the name of their esper ability or is somehow related to the nature of their esper ability. Currently, Accelerator is known only by the nickname assigned to him.

Characteristics
Level 5s are espers that hold a tremendous amount of esper-related power; their esper performance is far greater than any other esper that possesses an ability with either the same, if not a similar set of qualities to their own. The amount of influence that a Level 5 esper has as a result of their ability is so potent, that the primary applications of their ability are banned from being used in the Daihaseisai.

Furthermore, as power development is part of Academy City's curriculum, the strongest of Academy City's espers, such as the level 5s, are most likely also honor students. This is displayed by Mikoto, who has enrolled in Tokiwadai Middle School, and is one of its top students, as well as Accelerator. The Level 5s, apart from their peers, have specialized analysis and research facilities created for them, for example, Accelerator being part of the Special Ability Institute, Dark May Project, and many more.

They most likely get paid with the most money amongst their other esper peers as part of the curriculum's payment program for the espers as being part of the experiment.

Also, it seems that Academy City views Level 5 Espers (and others in general) as a threat, due to the fact that their developing minds can make them act based on emotions rather than logic. In order to rest easy, they have created Rensa, a cyborg that can use the abilities of the #1 up to #6 in order to deal with them in the case they decide to go against the city, and she supposedly can defeat all seven of them.

The ranking of the Level 5s is dependent on the worth of their abilities to the ongoing researches rather than based on the level of their power. Their counterparts are the Saints from the magic side.

Personality
A particular object of notability of all the Level 5 Espers is a recurring instance of mental instability, be it comedic or serious. Mikoto, the first Level 5 seen in the series, has a comedic obsession with defeating Kamijou Touma, although she has been referred to as the sanest one out of all the Level 5s. Sogiita Gunha believes himself to be an ally of justice and purposely acts in accordance of superheroes in fiction. Accelerator, Kakine Teitoku, Mugino Shizuri, and Shokuhou Misaki all demonstrate more sociopathic or psychopathic tendencies with the willingness to hurt people on a whim, though this may be more related to their background more than anything else. However, both Accelerator and Mugino have become less violent lately because they feel guilty about all the harm they've done. Misaki has also demonstrated that she does care about her friends and is willing to go out of her way to save them.

Due to this, only Mikoto is the one apparently competent enough to be used as a marketing mascot or demonstrator for Academy City. Even then, it is not unheard of for any of the Level 5s to be requested for demonstration.

In addition to this, many of the Level 5s are not on good terms with each other, although they would still sometimes form alliances if the situation called for it.