Mr. Rhenquist is Francine Rhenquist's father.
Mr. Rhenquist was introduced when he and his wife agreed to have Francine used in an experiment being conducted by Lisa at the '12th annual big science thing' convention. He and his wife are then seen laughing with the Simpson Family as Francine subsequently attacked and beat up every single nerd at the convention. He and his wife have made appearances in a few episodes. In some of the appearances, Francine is sometimes seen. His name has never been revealed.
Mr. Rhenquist wears long blue pants, a white shirt with long sleeves and a collar, a green vest, and brown shoes. He also wears glasses and has ginger hair and freckles.
- Episode – "Bye Bye Nerdie"
- – The Simpsons Movie
- Episode – "The D'oh-cial Network" (Was seen at church texting with everyone)
- Episode – "Dark Knight Court"
- Episode – "Pulpit Friction"
- Episode – "Yolo" (Seen walking into the school)
- Episode – "Steal This Episode" (Seen at church)
- Episode – "Married to the Blob" (Seen outside of The Android's Dungeon & Baseball Card Shop)
- Episode – "Walking Big & Tall" (School auditorium)