Myron Giant is a large robot imaginary friend who has made no major appearances, but makes minor appearances in most episodes in seasons 1 and 3.
Myron Giant is a huge robot with an oval shaped head, a black tube, a cadet blue circle and huge arms and legs.
- Myron Giant is based on the title character from the movie The Iron Giant. The movie was one of the first animation jobs of Lauren Faust, the developer, supervisong producer, character designer, storyboard artist and story editor of Foster's Home for Imaginary Friends.
- His name is a wordplay on "Iron Giant" and Myron, the name of the ancient Athenian sculptor famous for his Discobolus statue.