Koro Sensei Quest! is an ONA spinoff of the Assassination Classroom series. It began airing in Japan on December 23, 2016. FUNimation Entertainment licensed the series for an English release and began airing it on January 11, 2017.
English Voice Cast
Main Cast
- Lindsay Seidel - Nagisa Shiota
- Sonny Strait - Koro Sensei
Secondary Cast
- Apphia Yu - Rio Nakamura
- Austin Tindle - Karma Akabane
- Bryn Apprill - Ritsu
- Chris Burnett - Hiroto Maehara
- Chris Rager - Principal Asano
- Chris Ryan - Tadaomi Karasuma
- Clifford Chapin - Tomohito Sugino
- Ddid Archilla - Hinata Okano
- Eric Cherry - Takuya Muramatsu
- Felecia Angelle - Manami Okuda
- J. Michael Tatum - Shiro
- Jamie Marchi - Rinka Hayami
- Jean-Luc Hester - Masayoshi Kimura
- Jerry Jewell - Yuma Isogai
- Joel McDonald - Koki Mimura
- Kristen McGuire - Hinano Kurahashi
- Kristi Kang - Yuzuki Fuwa
- Kyle Phillips - Sosuke Sugaya
- Leah Clark - Yukiko Kanzaki
- Marcus D. Stimac - Ryoma Terasaka
- Martha Harms - Irina Jelavić
- Michelle Lee - Sumire Hara
- Michelle Rojas - Toka Yada
- Monica Rial - Kaede Kayano
- Morgan Garrett - Megu Kataoka
- Nick Haley - Taiga Okajima
- Orion Pitts - Taisei Yoshida
- Ricco Fajardo - Itona Horibe
- Scott Hinze - Kotaro Takebayashi
- Terri Doty - Kirara Hazama
- Z. Charles Bolton - Ryunosuke Chiba
Minor Cast
- Aaron Roberts - Koyama
- Ben Phillips - Smog
- Christopher R. Sabat - Grip
- David Trosko - Tomoya Seo (ep7)
- David Wald - Former Big Bad/Neuro Nogami (ep11)
- Ian Sinclair - Pupil (ep11)
- Josh Grelle - Araki
- Justin Cook - Takaoka
- Justin Pate - Sakakibara
- Lindsay Seidel - Kunodon
- Micah Solusod - Gakushu Asano (ep7)
- Mike McFarland - Gastro
- Sarah Wiedenheft - Yako Katsuragi (ep11)
- Sonny Strait - Hero (ep11)
- Whitney Rodgers - Aguri Yukimura