Main article: Yuka Azumi
She is the mother of Mikan Sakura and has the Stealing Alice, which she uses to steal the alices of the ESP clones. She also has the Instant Teleportation Alice. She is now deceased.
Main article: Shiki Masachika
Shiki is a member of Z, because he wants to stay by Yuka's side always. He has many alices that are inserted by Yuka. He now works for the High School Principal and resides in the academy.
Main article: Reo Mouri
He is a singer/actor who went to the academy and attempted to kidnap Natsume. He has the Voice Pheromone Alice.
Main article: Mihara
Mihara has the Stone Conversion Alice that allows him to turns things to stone and is nicknamed Medusa.
Main article: Ishimori
Main article: Shidō
Main article: Z's Boss
He is the unnamed boss of Z. With him being the son of a clone of the ESP, this has also caused hatred. The ESP has no control over him. Z's boss is an alice, but his is currently unknown. He, like the ESP, wants Yuka to accomplish his goals.
Z's Boss and his organization attacked the school during the High School Divison Arc. It is revealed that he intends on taking over the academy so he can use the Students' Alices for Z's own benefit.