I’m going to miss him doing the voices as well. I actually met Charles Martinet a few years ago and he was a really nice guy. While he may be retired from voicing the Mario character at least he still will be serving as a new ambassador role for the Mario character and Nintendo as well. Hopefully they will be able to get someone who’s good at impersonating his Mario voice and I wouldn’t be surprised if they were to use some recycled audio clips of his Mario voice for the character.