These are the voice actors I really, really, really, really, really hope to see in future Sonic games.
Mark Hamill. Originally Luke Skywalker in George Lucas' Star Wars. He risen to fame through voice acting as The Joker. Along with Liam O'Brien, he has also played a character in Darksiders, War's guide known as The Watcher.
Johnny Young Bosch, famous for voicing Ichigo, Nero, one of his live-action roles was Adam Park in the very popular series Power Rangers.
Liam O'Brien. Mostly famous for voicing Gara from Naruto(some of you already know,) Jushiro in bleach, and most recently, Night Crawler and Angel. He is currently voicing War, the protogonist of Darksiders 1 made by vigil games. Sadly, Death will replace War as the protogonist in Darksiders 2.
James Arnold Taylor, is currently voicing Ratchet from Going Cammando to the now in development Ratchet and Clank All 4 One
Nolan North, most famous for voicing Nathan Drake, Deadpool, Desmond Miles, and Cyclops. In a way of Irony, Nolan North and Roger Craig Smith have voiced the 2 main protogonists (Desmond and Ezio) from Assassin's Creed II to Revelations.
Steven Blum, known for voicing alot of video game, action cartoon, and anime characters mostly dealing with Science Fiction. One of his roles which I have been surprised of is the US dubbed Captain Harlock, he also played Wolverine in alot of X-men games. He played Jamie, a deuteragonist in Megas XLR (I love that show.)