Ryan Hansen and Daran Norris previously starred alongside each other in the series Veronica Mars (2004) as well as the feature film of the same name, Veronica Mars (2014). Both of those hits were also created by Party Down (2009) creator Rob Thomas.
Ryan Devlin (Kellum) also appeared in Play It Again, Dick (2014), an iZombie (2015) episode, Brainless in Seattle, Part 1 (2018), and Veronica Mars (2004). Rob Thomas created all four shows.
Daran Norris (Tony Carolla) was a semi-regular on iZombie (2015) (Johnny Frost) and a regular on Veronica Mars (2004) (Cliff McCormack). Both series, as well as Party Down, were created by Rob Thomas.