I'm experimenting on modifying vocals to make them sound dark and creepy.
What process is used to make Christian Bale (Batman) and Heath Ledger (The Joker) voice so dark/distorted/creepy.
Here's a clip of the Joker in the hostage scene. He shouts "Look at me" @ 1.04:
Also, here's the famous "Why so serious" clip (@ 0.42):
Side note: If you can name any decent VST plugins that specialise in manipulating vocals/speech, please leave references in the comment box. I would highly appreciate it.