| Character Information
Ken Krabappel is Edna Krabappel's ex-husband.
When Mrs. Krabappel tried to seduce Mr. Bergstrom, she told him that she was technically married, but it hadn't been much of a marriage since Mr. Krabappel moved out. Mr. Krabappel left Edna for another woman, possibly a younger one. After Edna showed the sex-education film Fuzzy Bunny's Guide to You Know What to her class, Nelson Muntz asked why she and Mr. Krabappel didn't live together. Edna angrily replied, "Because Mr. Krabappel chased something small and fluffy down a rabbit hole", referring both to the film's characters (Fuzzy Bunny and Fluffy Bunny) and to her ex's unfaithfulness.
Mr. Karabappel once put sugar in the gas tank of Edna's car after they got divorced.
Behind the Laughter
In "The War of the Simpsons", several other couples were attending the marriage retreat were cut from the episode's script including Mrs. Krabappel trying to reunite with her estranged husband named Ken. Ken Krabappel was supposed to be based on singer Dean Martin, but somehow he ended up with a southern accent that made him sound like a hick.