Actress Carla Gugino is the girlfriend of director Sebastian Gutierrez and appears in many of his projects.
The character name of "Eugene Portland" would seem to be an obvious reference to the second and first largest cities in Oregon.
Reunites Malin Akerman with Carla Gugino after Watchmen (2009).
Both Rosario Dawson and Carla Gunino previously worked together in 2005's Sin City, which is almost exactly the same title name as this movie.
Malin Akerman previously starred in a TV show in 2015 with a title very similar to this movie's title, Sin City Saints.