Mrs. Frink

Mrs. Finch is a a wife of Professor Frink. They probably were separated or divorced.

History
When their son crashed through a window during a demonstration of a remote controlled airplane, Professor Frink said that his wife was going to kill him.

When Professor Frink bought Simpson & Son Revitalizing Tonic, he doubted its effects. However, when he drank it, he turned into a handsome man and with smooth voice asked his wife to have a wild wingding at the cyclotron. She agree giggling and the couple left.