
Quick answer — Hiroya Ishimaru voices Siwen Liu in LINK CLICK Episode 5.5, Shunsuke Sengoku in Cyber City Oedo 808, Kouji Kabuto in Mazinger Z and 7 more characters.
Hiroya Ishimaru voices Siwen Liu (LINK CLICK Episode 5.5), Shunsuke Sengoku (Cyber City Oedo 808), Kouji Kabuto (Mazinger Z), Yasuo (Tokyo Godfathers), Orlo (Future Boy Conan), Hopachai Apachai (Kenichi: The Mightiest Disciple), Susumu Yagami (Digimon Adventure (Movie)), Chin Yisou (Saiyuki) and 2 more.
Siwen Liu is voiced in Japanese by Hiroya Ishimaru.