Morty Jr.

Morty Jr., possibly intended to be expanded as Mortimer "Morty" Smith, Jr., is Morty Smith's son. He was conceived by Morty and a Gazorpian sex robot named Gwendolyn in the episode "Raising Gazorpazorp." Morty Jr. grew from an infant to a full adult at a hyper-increased rate, allowing him to quickly outgrow his father.