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Bernadette Rostenkowski-Wolowitz, portrayed by Melissa Rauch, is a prominent character in the American sitcom "The Big Bang Theory." Introduced as a waitress at The Cheesecake Factory, she captures the attention of Howard Wolowitz and eventually becomes his wife. Bernadette is known for her strong personality, sharp wit, and no-nonsense attitude, often serving as the voice of reason within the group of friends.