Characterized by his sea urchin-like spiky hair, though this is achieved with hair products rather than being natural. While often described as having a plain or unremarkable face, his father Toya says his expression when deep in thought resembles his mother's, suggesting he isn't bad-looking.

An apprentice nun belonging to 'Necessarius' (the Church of Necessary Evil) of the English Puritan Church. A living 'Library of Grimoires' who has memorized 103,000 magical books thanks to her perfect recall ability.

The 3rd ranked Level 5 esper. A girl with refined features and a shoulder-length brown bob cut.

A member of Judgment (Branch 177) with the Level 4 ability 'Spatial Movement' (Teleportation).

Uiharu Kazari's classmate, a slender and beautiful girl with long black hair.

A member of Judgment Branch 177. She is known for her short black hair, a sweet voice described as 'like rolling candy,' and her trademark hair ornament that looks like a 'walking flower vase.'

Identical in appearance to Mikoto Misaka, they are not her biological sisters but somatic cell clones produced based on Mikoto's DNA map. Sisters (Misaka Clones)

Has an androgynous, pale appearance with white hair and red eyes. This is because his ability reflects all ultraviolet rays, preventing him from tanning. He is considered to have 'refined features.'

The '20001st' superior individual, the last of Mikoto Misaka's mass-produced clones (Sisters). Because she left the incubator during the manufacturing process, she looks very young.