The official website for High School DxD Hero, the fourth season of the High School DxD television anime series, confirmed the anime's returning cast members on Saturday. The cast, all returning from previous High School DxD anime, include:

Yuuki Kaji as Issei Hyōdō Yōko Hikasa as Rias Gremory Azumi Asakura as Asia Argento Shizuka Itou as Akeno Himejima Ayana Taketatsu as Koneko Tōjō Kenji Nojima as Yūto Kiba Rikiya Koyama as Azazel Ryota Ohsaka as Vali Lucifer Yūichi Nakamura as Sairaorg Bael

Yoshifumi Sueda (Rail Wars!, episode director for Gosick, MAOYU, So, I Can't Play H!) is directing the series at Passione (Haitai Nanafa, Hinako Note, Rail Wars!). Kenji Konuta (Blood Lad, Servamp, Library War) is handling the series composition, and Makoto Uno (The Qwaser of Stigmata, Rail Wars!, Love Hina) is the character designer. The series will premiere in 2018.

Author Ichiei Ishibumi and illustrator Miyama-Zero's High School DxD light novel series previously inspired three television anime series. Tetsuya Yanagisawa had directed all three series at TNK.