|V. M. Koothrappali|
Dr. V. M. Koothrappali is the husband of Mrs. Koothrappali, and father to Raj, Priya, 3 other boys and 1 girl according to Raj. To date, all of his appearances have been in a video chat window, together with his wife.
He is a wealthy gynecologist in India, drives a Bentley and has a large house full of servants. He believes academics have a limited earning potential, and wishes his son would have become a gynecologist too, as he is apparently unaware of his son's mutism condition. ("The Grasshopper Experiment")Indian girls, even though Raj disapproves of this on several occasions. He has also shown concern (voiced by his wife) about Raj's close friendship with Howard, which for them could be a sign that he is gay. They are also under the impression that Leonard and Sheldon are a gay couple, although Leonard quickly corrects them. Once while Raj was drunk, he introduced Penny to them as his girlfriend. After they call Penny a hotsie-totsie, Penny sets them straight that they would be lucky to have her as a daughter-in-law, Dr. V.M. thinks that she is feisty. They also threatened to cut off his allowance when Penny told them that the deaf girl Emily was using her disability to get Raj to buy her extremely expensive gifts such as rubies, who then dumped him.
- He is one of three fathers of the main cast who has physically appeared on the show; the others being Penny and Bernadette (Leonard's father is only mentioned, Sheldon's is dead, Howard's left him at 11, Amy's has never been seen or mentioned and Stuart's is only mentioned).