Walter BishopPlayed by: John Noble
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.
Astrid: What is?