[In a post-credits scene, Fred stands in front of the family portrait]
Fred: Dad, I just wish I could share my accomplishments with you. You mean so much to me and, honestly I've always felt a distance, what with you being on the family island all the time and I just wish you could see how-
[Fred touches the portrait and it opens, revealing a secret room. Inside is a large computer console, two sets of superhero costumes and a plethora of different gadgets. Fred enters the room and looks around. He picks up a pair of underwear]
Fred's Dad: Fred.
[Fred's Dad enters the room to reveal that he is none other than Stan "The Man" Lee]
Fred's Dad: Son.
Fred's Dad: [He picks up the underwear and holds them proudly] I wear 'em front. I wear 'em back.
Fred, Fred's Dad: [Fred joins in] I go inside out. Then I go front and back.
[Fred hugs his father happily]
Fred's Dad: We have a *lot* to talk about!