 Commentators appreciated the character development and dialogue . Associated Press reviewer Christy Lemire wrote that the script " sparkles as brightly as the special effects ; these people may be wearing ridiculous costumes but they 're well fleshed @-@ out underneath . " Scott suggested that certain parts of the film permeated a charm that he felt was similar to the western film Rio Bravo ( 1959 ) . Longworth felt that while Whedon 's script demonstrated the backstory of the characters , the film does not explore it " in a substantive way " . 
