
Quick answer — Tomohisa Hashizume voices Bertolt Hoover in Attack on Titan Season 2, Delico in GANGSTA., Thien in Terra Formars: Bugs 2-hen and 1 more characters.
Tomohisa Hashizume voices Bertolt Hoover (Attack on Titan Season 2), Delico (GANGSTA.), Thien (Terra Formars: Bugs 2-hen), Father Miyagawa (Recorder and Randsell Re).
Bertolt Hoover is voiced in Japanese by Tomohisa Hashizume.