James Gunn looked to Better Call Saul when writing Peacemaker - The A.V. Club

When it came to learning the differences between writing for television versus film, Gunn looked to AMC’s Better Call Saul for inspiration.

So I think it’s really just taking that incredibly smart dialogue, that relaxed nature of grounded life and then mixing that with the other things that I wanted to do with the show.

That’s really the only thing,” Gunn continues.

So it’s just a much more complicated relationship, and you need things to be more cut and dried in a two-hour movie.”.