Melissa Ivy Rauch is an American actress. She is known for playing Bernadette Rostenkowski-Wolowitz on the sitcom The Big Bang Theory, for which she was nominated for the Critics' Choice Television Award for Best Supporting Actress in a Comedy Series in 2013. From 2004 to 2008, Rauch worked as a regular contributor on the VH1 series Best Week Ever. Rauch's other acting credits include playing Tina on the American remake of Kath & Kim and Summer on the HBO fantasy horror drama True Blood. Rauch also starred in, co-wrote and co-produced the 2015 sports comedy-drama film The Bronze and provided the voice of DC character Harley Quinn in the 2017 animated film Batman and Harley Quinn. Rauch also had supporting roles in I Love You, Man (2009), Ice Age: Collision Course and Flock of Dudes (both 2016), and Ode to Joy and The Laundromat (both 2019).