Complex sentence: Jeff Vintar and Iron Man co-creator Stan Lee co-wrote a story for Fox, which Vintar adapted into a screenplay, and included a new science-fiction origin for the character, and featured MODOK as the villain.
Split into simpler sentences: Jeff Vintar and Iron Man co-creator Stan Lee co-wrote a story for Fox, which Vintar adapted into a screenplay. It included a new science-fiction origin for the character, and featured MODOK as the villain.