Kenji Utsumi
AKA Raoh (HNK), Zodd (Berserk), Sidney Sitolet (LoGH), Alex Louis Armstrong (FMA), Shenron Recoom (DBZ), Black King Boss (Casshern), World Tournament Announcer & Commander Red & Shenron again (DB), and a hell of a lot more.
My personal favourite, no one does those guttural yells like him. Not to mention he's got some of the most badass lines in anime ("Of this life, I have not one regret!" IIRC Raoh's final words).
There was a scene in LoGH where he and Wakamoto have a quick chat and it was pretty goddamn amazing.