James Gunn wrote the entire first season in 8 weeks during COVID quarantine out of pure boredom, not actually believing the series would ever get picked up.
James Gunn added post-credits scene to each episode as a way to reward fans who always watch to the end of the closing credits.
When asked how they matched the bloodstains on Peacemaker's uniform in the opening of Episode 1, James Gunn is pretty certain they just used the same one from the end of The Suicide Squad.
Eagly is voiced by Dee Bradley Baker, who had previously voiced Sebastian the rat in The Suicide Squad (2021).
Peacemaker was the template for the character "The Comedian" from the Watchmen movie and comic book series, also based on DC comics.