Even though--John (Lanny Joon) from the mini web series 'K-Town Cowboys' (2010) that launched before the movie adaptation wasn't attached to the cast when the first announced. Possibly from scheduling conflicts with other projects during the time of filming started.
In the mini web series K-Town Cowboys (2010)--actress, Mina Yoo played a character named 'Ester'. Here for the film adaptation, another actress named Camila Greenberg plays a role with the same name.
Indie Singer/Songwriter, Bobby Choy has some of his music on the movie's soundtrack. Choy also an actor, reprising his role as 'Robby' from the mini web series.