If you haven't heard already the English voice actor for Asmodeus and Mu-Chan, Billy Kametz has passed away on June 9, 2022.
He also voiced acted for Rui from Demon Slayer, Shinichiro Sano from Tokyo Revengers, Kunimi Lieutenant from The Way of the House Husband, and many more animes and video games.
I personally didn't realize he voice acted for so many characters that I knew of since I mostly listen to the Japanese voice actors but knowing now that if I just see Nicolo in AoT or even Asmodeus I'll know that one of their Va's is gone.
I hope his family are being taken care of during this time of theirs and that they heal with time.
Rest In Peace Billy Kametz, it is time for you to rest.