Accelerator (一方通行/アクセラレータ Ippō Tsūkō/ (Akuserarēta) is the codename used to refer to the strongest esper currently residing in Academy City.
He is the second protagonist of the Science Side in the Toaru Majutsu no Index series. First appearing chronologically in Toaru Majutsu no Index as an antagonist, he later becomes the primary male protagonist of the Science Side after being defeated by Kamijou Touma. He is a member of GROUP since Volume 13 of the light novels, when he was forced to join after hearing how it was the best way for him to protect Last Order. As the...

Itsuwa is described as a young Japanese girl with black hair (depicted in visual media as purple) that reaches her shoulders. She wears her hair in a bobcut with short fringes.
Itsuwa is rather well-endowed but is referred by her Amakusa comrades as hidden. Her clothing consists of things that allows her blend with her surroundings more readily, such as her sleeveless tank top—capris combo or her tank top over sweater with pants that seem to be cut apart. During her mission Avignon, she isforced to wear skimpy clothing because she has nothing else to put on after jumping into the river to...

Musujime Awaki (結標 淡希 Musujime Awaki) is a second year student attending Kirigaoka Girls' Academy, one of the most prestigious schools in Academy City. She is the guide to the windowless building where Aleister Crowley resides and is a member of GROUP, forced to join when the city's Board of Directors captured her close friends and blackmailed her. She is living with Tsukuyomi Komoe after losing to Accelerator in the Tree Diagram 'Remnant' incident.

She is a girl with long dark red hair tied into two low ponytails. Instead of wearing the Kirigaoka Girls' Academy uniform's dark blue coat...