Mr. Bossman is the a minor villain on The Cartoon Network Series Regular Show, he only appears in Benson's story in "Terror Tales of the Park V".
When Benson needed to motivate Mordecai and Rigby to work, he saw a commercial on TV about Mr. Bossman that would help motivate their boss's workers. While it does motivate Mordecai and Rigby, Mr. Bossman intends to take Benson's job away to support his family. Benson runs to the Park house to get help from Mordecai and Rigby but Mr. Bossman manages to catch up to him and he attacks Benson. Mordecai and Rigby tell Benson to use the Salad Guillotine, which Mordecai and Rigby saw in a commercial and actually bought it, and Benson uses it to decapitate Mr. Bossman.