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The thing is, Waldo ‘is’ Actually on there, and in true ‘Geek Style’ he’s a Robot…but the best person to be included is the late and great Ralph McQuarrie.   
This epic poster is by the brilliant Concept Artist and Illustrator Jeff Carlisle which will be on sale at Star Wars Celebration VI in August. Find out more about the people he’s included in the poster on his Facebook Page.