Board Thread:Fun and Games/@comment-34018739-20180416154934/@comment-34018739-20180423144857

He was in the book yes, they could not get the rights for the movie and replaced him (and presumably Leopardon from the Japanese Spiderman series as well) with the Iron Giant.

Watching the movie I realized how similar the head designs for the Iron Giant and Ultraman are, so that's pretty cool.