Dr. Walter Bishop was once hailed at the most promising scientist of his generation. He knows more about quantum physics to genetic engineering than... anyone.
However, an accident in 1991 sent a lab assistant to the grave, and Walter himself to St. Claire's mental hospital. He's now re-emerged and is working with FBI Special Agent Olivia Dunham, along with his son, on important, mysterious cases.
Etta: It's an egg stick.
Walter: What a miserable future.
Walter: How badly does it hurt?
Peter: There is no pain.