Alfie Curtis, the British actor best known as the menacing Dr. Cornelius Evazan from the cantina scene in 1977's Star Wars, passed away Dec. 25. He was 87 years old.

Evazan was the disfigured patron of the Mos Eisley Cantina who warned a young Luke Skywalker to "just watch yourself." "We're wanted men," he boasted. "I have the death sentence on 12 systems."

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Mark Hamill paid tribute to Curtis on Twitter, writing that he "made the Star Wars Mos Eisley Cantina scene (one of the most memorable I've ever been a part of) even MORE memorable. As horrific as he was on-camera, off-camera he was funny, kind & a real gentleman."

ALFIE CURTIS made the #StarWars Mos Eisley Cantina scene (one of the most memorable I've ever been a part of) even MORE memorable. As horrific as he was on-camera, off-camera he was funny, kind & a real gentleman. Thanks Alf- you'll be missed. #RIP ❤️- mh pic.twitter.com/laxKvbGmrd— @HamillHimself (@HamillHimself) December 27, 2017

Curtis' film and television credits also include roles in The Elephant Man, Ladykillers and Cribb.

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Although Evazan was never named in Star Wars, and appeared only briefly, his backstory was developed elsewhere in the Expanded Universe (now referred to as Legends). There, he was a once-promising cosmetic surgeon who, after descending into madness, partners with Ponda Baba -- his drinking companion at the cantina -- and smuggles spice for Jabba the Hutt.

Cornelius Evazan appears briefly in 2016's Rogue One: A Star Wars Story, where, played by actor Michael Smiley, he warns Cassian Andor to -- you guessed it -- "just watch yourself."