Bernadette Marianne Rostenkowski

Bernadette Marianne Rostenkowski, PhD - a young woman studying microbiology and a co-worker of Penny's, who later, after successfully getting her degree, gets a high-paying research position. She is also known for her high-pitched voice and for her short temper.

Appearances

The Big Bang Theory
Main cast, played by Melissa Rauch
Guest cast, played by Melissa Rauch