Jean Munhroe's Dad is the father of Jean Munhroe who was engaged to Keith Pembroke.
He is considered an unseen character since he is mentioned but never seen, except for this photo from an article on Amy's laptop.
Throughout The Series
In the Season Five episode, The Venue, Jake Peralta and Amy Santiago investigate the woman who is engaged to the Vulture. After they discovered she was a philanthropist running a non-profit to feed starving children in Africa they became suspicious of her match with the Vulture. Amy discovers she is the only heir to her father, who happens to be worth at least $117 million.