Ken is one of Ethel's ex-boyfriends who appeared (only) in "Little Boy Malloy". Ethel first met Ken at the Soup Kitchen for poor people. He has a habit of having an orgasm every time he feels sexual towards Ethel. He lives with his mother and father, and has a race car bed down in the basement, which is further proof he is such a man-baby.
He works at a submarine sandwich shop, which is probably Subway or Quizno's.