Gayle (voiced by Megan Mullally) -- Linda 's neurotic artist sister, the aunt of Tina, Gene and Louise and the sister - in - law of Bob. Bob dislikes her, much to Linda 's consternation. She is desperately lonely and once fell in love with Bob because, Linda explains, she always wants what Linda has. However, men often take an interest in her, including Dr. Yap, Mort, Mr. Frond and Mr. Fischoeder. She loves cats and may suffer from some form of factitious disorder, as she often fakes injuries.
who plays aunt gayle in bob's burgers
Megan Mullally