
Quick answer — Eiji Hanawa voices Dumas in Fantastic Children, Chikage Kobayakawa in Antique Bakery, Chi-Yul Song in Solo Leveling and 21 more characters.
Eiji Hanawa voices Dumas (Fantastic Children), Chikage Kobayakawa (Antique Bakery), Chi-Yul Song (Solo Leveling), Shunan (Erin), Gary (Gungrave), Weiz (Spice and Wolf: MERCHANT MEETS THE WISE WOLF), Rajan Zahi (Mobile Suit Gundam: The Witch from Mercury), Kazuki Kawai (Big Windup!) and 16 more.
Dumas is voiced in Japanese by Eiji Hanawa.