.
.
Nagisa : Gender
Karma : Half Emo
Kayano : Forever Zero
Sugino : Baseball Freak
Sugaya : Tall Artist
Karasuma : Straight Lace
Isogai : Poor Committee
Rinka : Tsundere Sniper
Maehara : Womanizing Scum
Mimura : Mushroom Director
Kanzaki : Master Kanzaki
Hinano : Fluffy Beetle
Okuda : Poison Glasses
Taisei : Homebase
Murumatsu : Loofah
Itona : CoroCoro Generation
Terasaka : Pseudo Takaoka
Megu : Stern lecture
Nakamura : Gal english
Okajima : Stage four
Fuwa : This manga
Chiba : Gyaru Game Main Character
Kimura : Justice
Yada : Pony Tail and B00bs
Hinata : Amazing Monkey
Ritsu : Moe Box
Koro-sensei : The prince of the fateful eternal wind / the stupid perverted chicken octopus
Takebayashi : Glasses
Kirara : Group E darkness
Hara : Mother of Nagigaoka
**End
Sorry, these where the only code names shown, but, I'm still re-reading the manga, and might add more but this will do for now
