Star Wars films aren't known just for heroes and villains like Luke Skywalker and Darth Vader. The fantastical creatures that represent a myriad of alien species help make Star Wars movies so memorable.
"The creatures are amazing," Alan Tudyk, who voices robot K-2SO, says in the video. "Their eyes blink and move, and their lips have very subtle expression."
"You look up and one of the creatures -- a huge monkey shooting an enormous gun out of a plane, and then you remember, 'Oh we're actually in Star Wars," adds Felicity Jones, who plays rebel fighter Jyn Erso.
"Rogue One: A Star Wars Story" is set to hit theaters on December 15 in Australia, and December 16 in the US and UK.