Kensho Ono is a Japanese actor, voice actor and singer affiliated with Animo Produce. On July 8, 2020, he announced his marriage to voice actress Kana Hanazawa.

Kensho Ono plays as Kall-Su (voice) in I'm Quitting Heroing.
Kensho Ono is the top #1 member of the cast and appears in 39 episodes.

Yumi Uchiyama (内山 夕実 Uchiyama Yumi, born October 30, 1987) is a Japanese voice actress from Tokyo, Japan and is affiliated with Office Osawa.

Yumi Uchiyama plays as Rudeus Greyrat (voice) in I'm Quitting Heroing.
Yumi Uchiyama is the top #2 member of the cast and appears in 24 episodes.

Tetsu Inada (稲田 徹, Inada Tetsu) is a Japanese voice actor (seiyuu) who currently works for Aoni Production.

Tetsu Inada plays as Donadrond (voice) in I'm Quitting Heroing.
Tetsu Inada is the top #3 member of the cast and appears in 12 episodes.

Hitomi Ohwada plays as Charlotte (voice) in I'm Quitting Heroing.
Hitomi Ohwada is the top #4 member of the cast and appears in 12 episodes.

Kaede Hondo (本渡 楓, Hondo Kaede, born March 6, 1996) is a Japanese voice actress from Nagoya, Aichi Prefecture. She is affiliated with I'm Enterprise. After starting her voice acting career in 2015, she was cast in her first main role that year as Kokoro Yotsuba in the anime series Kamisama Minarai: Himitsu no Cocotama. She is also known for her roles as Yae Kugayama in Girlish Number, Minoa Asagaya in Anime-Gatari, Kanami Eto in Katana Maidens ~ Toji No Miko, Koyume Koizuka in Comic Girls, Hitomi Mishima in Hinamatsuri, and Sakura Minamoto in Zombie Land Saga. In 2019, she won the Best New Actress Award in the 13th Seiyu Awards with Manaka Iwami, Tomori Kusunoki, Coco Hayashi, and Rina Honnizumi.

Kaede Hondo plays as Yasuko Nawashiro (voice) in I'm Quitting Heroing.
Kaede Hondo is the top #5 member of the cast and appears in 12 episodes.

Shizuka Itoh is a Japanese voice actress and singer from Tokyo. She is represented by Ken Production. She won Best supporting actress on "10th Seiyu Awards". Itoh loves drinking very much. She and fellow voice actress Hitomi Nabatame formed a voice acting unit called "Hitomi Nabatame and Shizuka Itoh". Together they are known by the name Hitoshizuku (ひとしずく), which is Japanese for "a single droplet". In 2012, on her 32nd birthday, she announced that she had married. Taeko Kawajiri, Shinako Kinoshita and Rina Misaki are aliases used by Shizuka Itoh for adult productions.

Shizuka Itoh plays as Kabura Honda (voice) in I'm Quitting Heroing.
Shizuka Itoh is the top #6 member of the cast and appears in 10 episodes.

Minori Suzuki plays as Dianette (voice) in I'm Quitting Heroing.
Minori Suzuki is the top #7 member of the cast and appears in 9 episodes.

Misato Matsuoka plays as Jerietta (voice) in I'm Quitting Heroing.
Misato Matsuoka is the top #8 member of the cast and appears in 9 episodes.