The film was announced in December 2017, then untitled, with James Gunn as a producer, his brother Brian and cousin Mark writing the script, and David Yarovesky directing.[3] In March 2018, Elizabeth Banks, David Denman, Jackson A. Dunn, Meredith Hagner and Matt Jones were cast.[4] Gunn was set to appear on a panel to discuss the project at San Diego Comic-Con in July 2018, but his appearance was canceled after news broke that Disney had fired Gunn as director of Guardians of the Galaxy Vol.