the way they interpreted my character for this movie - the costume, the whole getup - and I was like, 'Oh, wow. I get to be that guy? Fantastic. Sign me up. Please. Thank you.'" Gordon-Levitt described his vocal performance as being half reminiscent of Chris Latta's voice for the 1980s cartoon, but also half his own ideas, because he felt rendering it fully would sound ridiculous. The hood was not used in the movie, due to concerns that it would resemble the hood used by the KKK. For most of the movie, he is referred to as The Doctor, a "mad" scientist working with James McCullen researching military uses of nanomites. It is revealed that he was Rexford G. "Rex" Lewis, the younger brother of Ana Lewis, and once a military science officer alongside Duke, his friend and mentor. When an enemy East African location is destroyed prematurely by an air strike, Rex is presumed dead. However, just prior to the explosion, Rex witnessed McCullen's experimental research on nanomites, conducted by Doctor Mindbender. Surviving the incident, scarred & requiring a special mask to breathe, Rex learns from Mindbender and perfects the nanomites. He uses his own sister as a test subject in creating the Neo-Vipers, making her the Cobra agent known as the Baroness. Rex holds a grudge against Duke for leaving him to die. When Duke is captured, Rex reveals himself, as he attempts to inject Duke with the nanomites, the Baroness overcomes her programming and saves Duke, while Rex escapes with a badly burned McCullen. Rex uses specially made nanomites to heal McCullen's face, which also encases it in a living, silver-like metal. Dubbing him "Destro", Rex puts on a new breathing mask and tells McCullen to call him Commander. Although he is arrested and placed in a high security prison aboard the USS Flagg, Cobra Commander's master plan has only begun, with Zartan disguised as the President of the United States. Cobra Commander returns in G.I. Joe: Retaliation, played by Australian actor Luke Bracey and voiced by Robert Baker. Director Jon Chu suggested in a March 2012 interview that this Cobra Commander is not the same character played by Joseph Gordon-Levitt in The Rise of Cobra, but in May 2012 confirmed that the Cobra Commander of Retaliation is indeed still Rex Lewis. He features an altered appearance from the first film, more similar to his helmeted