“- Giddy: Did you know it could be dangerous to wake somebody up when they're dreaming, well, because you leave part of your brain behind. And if it happens too many times, you go feeble in the head.
- Sheela: Yeah. You're living proof.”
Portia de Rossi - Giddy
Elle Macpherson - Sheela

“Brain function in the dream will be about twenty times to normal. When you enter a dream within that dream, the effect is compounded.”
Dileep Rao - Yusuf

“Excuse me sir, would you like to see a free screening? We've got a live theater broadcasting dreams all the way from the subconscious in the brain.”
Richard Steven Horvitz - Additional Character Voice

“- Ygor: You're going to help him Doctor? You are giving him life?
- Ludwig Frankenstein: Yes but not for the purposes that you think Ygor. I'm giving him strength so that an operation may be successful.
- Ygor: An operation?
- Ludwig Frankenstein: Yes. I'm giving him another brain.”
Béla Lugosi - Ygor
Cedrick Webster Hardwicke - Dr. Frankenstein

“- Ygor: Whose brain?
- Ludwig Frankenstein: Kettering. A man of character and learning. The monster will cease to be an evil influence and become everything that is good.”

Béla Lugosi - Ygor
Cedrick Webster Hardwicke - Dr. Frankenstein