There's no better place to start in leaked concept art territory than a character everyone already knows and loves. If the above leak is anything to go by, Chewbacca seems to have lost one of his furry appendages in the years between Return Of The Jedi and The Force Awakens. Sporting a shiny new bionic arm in many of the leaked images for him, it looks like there's a pretty big possibility that everyone's favourite Wookie will be returning as part fur-ball, part machine in Episode VII. How and why Chewie may have a new robotic appendage is a story detail that sadly, nobody knows. But considering the fact that characters in the Star Wars universe are prone to losing limbs in various different ways, it could be worth subscribing to the idea that Chewie will lose the arm during the first film in the new trilogy. Various pictures taken on the set of the film seem to support this idea - Peter Mahew has been spotted on-set and in costume without the metallic arm adorning his costume. That, of course, could mean that the concept art was ditched or that the bionic arm is to be added in through the use of CGI, but it's likely the character will lose his arm in a spectacular fashion similar to Luke in Empire Strikes Back.