Here's who we can probably expect for the leaked characters' voices...
- Spike: Richard Horvitz (AE: On The Loose)
As much as I highly prefer the AE1 VA (Even the AE2 VA) over Horvitz, he's not the worst choice they could have picked. Liked his work as Billy and Invader Jim, but there was something about Spike having a mature voice that really made him stand out.
EDIT: Didn't realize Sir Daniel had many speaking roles in his games... can anyone show me some funny quotes?