Take two as a Teenage Mutant Ninja Turtle walks down Fifth Avenue during Comic ConPhotograph: Sandy Huffaker/Getty ImagesFans set things off with a bang across the San Diego Convention CenterPhotograph: Sandy Huffaker/ Sandy Huffaker/CorbisA winning smile. Michael Cherry dresses as the Joker during Comic ConPhotograph: Sandy Huffaker/Getty ImagesA game of cat and mouse ruins no one's fun at Comic ConPhotograph: Sandy Huffaker/CorbisStephen Yan makes for a convincing Deadpool at Comic ConPhotograph: Sandy Huffaker/Getty ImagesThe human, super-human and alien share the floor at Comic ConPhotograph: Sandy Huffaker/CorbisStyle added to the proceedings on Fifth Avenue in San Diego's Gaslamp QuarterPhotograph: Sandy Huffaker/CorbisTom Hiddleston poses as the villainous Loki in Thor: The Dark World presentationPhotograph: Alberto E. Rodriguez/WireImageA young girl alleviates anyone's former nightmares of the storm trooper characters from the Star Wars moviesPhotograph: David Maung/EPADan Harmon, creator of Community, in costume as Iron Man at Comic-Con 2013Photograph: Jordan Strauss/Jordan Strauss/Invision/APJamie Foxx and Spiderman finally get acquainted at Comic-Con 2013Photograph: Jordan Strauss/Jordan Strauss/Invision/APBeckham the dog gets a super makeover as he visits Comic ConPhotograph: Sandy Huffaker/Getty ImagesDelaney Percy seems to get away with brandishing a 'weapon' as she portrays Anya from Gears of WarPhotograph: Sean M. Haffey/APRetired superman? Gary McAuley gives the famous character a make-under as he arrives at Comic ConPhotograph: K.C. Alfred/APA novel attempt to avoid the queues into Comic ConPhotograph: Robyn Beck/AFP/Getty ImagesLon Brown a.k.a., LONSTERMASH (a.k.a Hugh Jackman?), makes for a very convincing version of Marvel's WolverinePhotograph: David Poller/David Poller/ZUMA Press/Corbis