
Quick answer — Ami Naitou voices Hoshi in Sonny Boy, Akuma no Ko in Frieren: Beyond Journey’s End, Sam Whiteley in Moriarty the Patriot Part 2 and 2 more characters.
Ami Naitou voices Hoshi (Sonny Boy), Akuma no Ko (Frieren: Beyond Journey’s End), Sam Whiteley (Moriarty the Patriot Part 2), Jade Ariel (The Ancient Magus' Bride), Oicho (Megalobox).
Hoshi is voiced in Japanese by Ami Naitou.