Peter Bishop grew up as the neglected son of a mad scientist.
After his dad's mental institutionalization, Peter aimed to make himself as different from his father as he could. He's a college drop-out that passed for several months as a chemistry professor, along with an intuitive mathematician with a gambling problem.
Peter is now a civilian consultant for the FBI.
Walter: I asked you not to work on that device in my lab.
Peter: They are working on it on the other side. We need to understand exactly what it does.
Walter: What's there to understand? You're playing with fire, stop being so bull headed and put a stop to this.
I don't know who I am anymore.Peter