Oburi
All praise Grail
I don't think Griffiths english VA has a bad voice really, but his delivery is all wrong. Since I saw the entire anime before reading the manga (and I watched it dubbed) I didn't know much about anime and manga at the time so Griffiths voice seemed to fit, and when I read the manga I still had his voice in my head. However, the last time I watched the anime in english it was cringe worthy. I showed this girl who I had got into Berserk the anime (she read the manga first) and she also said that Griffs voice was all wrong.