Jack (The Cad and the Hat)

Jack is the chief electrician on the set of the Simpson house.

History
When Bart and Lisa were giving the episode's closing speech, Nelson came in and laughed at Bart. When Lisa questioned how Nelson got into a closed set, Nelson said that his mom is dating the gaffer for the set, Jack. Lisa asked Jack if it was true and Jack said he wasn't proud of it. Nelson's mom then told him that he seemed pretty proud when he ate all their ramen noodles.