This train of thought triggered Tudyk to realize the commonality between all the characters of Rogue One.
“I guess everybody has their own devotion in this movie, every character does. It’s different, interesting. They ultimately are all devoted to fulfilling the mission, but they come together from all these different places, and with their backgrounds and they fall into a place where like, ‘This is what we’re going to do. We’ve been brought together to do something here, let’s do it.’ He’s one of those, and he does take a journey there. When it becomes apparent that these [other] people are going to be helpful in this, and necessary, and that Cassian wants it, then that’s that. Whatever Cassian wants he’s going to do.”
The original Star Wars drew a striking divide between heroes Luke Skywalker and Han Solo over this very issue. Despite being young and unaffiliated, Luke had a devotion to the greater good and had a desire to join the Rebellion, while Han was unapologetically selfish. Since Rogue One is all about the Rebels, an essential devotion to the greater good is understandably a prerequisite. Hopefully, this doesn’t preclude the inclusion of lovable scoundrels from the cast. We’ll find out when Rogue One hits theaters later this month.