Attendees gather outside the Samsung Galaxy Experience on the final day of Comic-Con International in San Diego on Sunday, July 21. The convention is the largest comics and entertainment convention in North America and hosts celebrity panels, artist workshops, television and movie premieres as well as a trade show with booths from a variety of entertainment genres. <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2013%2F07%2F19%2Fus%2Fgallery%2Fcomic-con-celebs-2013%2Findex.html" target="_blank">See coverage of celebrity appearances at Comic-Con 2013</a>.
Sights from 2013 Comic-Con —
Attendees gather outside the Samsung Galaxy Experience on the final day of Comic-Con International in San Diego on Sunday, July 21. The convention is the largest comics and entertainment convention in North America and hosts celebrity panels, artist workshops, television and movie premieres as well as a trade show with booths from a variety of entertainment genres. See coverage of celebrity appearances at Comic-Con 2013.
Michael Buckner/Getty Images for Samsung
A picture made using a long exposure shows people outside of the San Diego Convention Center on Saturday, July 20.
Sights from 2013 Comic-Con —
A picture made using a long exposure shows people outside of the San Diego Convention Center on Saturday, July 20.
Adam Rose/CNN
People gather around a dog dressed as Batman as it encounters a large, colorful creature on July 20.
Sights from 2013 Comic-Con —
People gather around a dog dressed as Batman as it encounters a large, colorful creature on July 20.
Adam Rose/CNN
A convention-goer dressed as Optimus Prime from the "Transformers" franchise walks outside of the convention center on July 20.
Sights from 2013 Comic-Con —
A convention-goer dressed as Optimus Prime from the "Transformers" franchise walks outside of the convention center on July 20.
Adam Rose/CNN
Gillian Owen, dressed as fictional comic book character Scarlet Witch, poses on a walkway during a photo shoot with another photographer on Day 4 of Comic-Con on July 20.
Sights from 2013 Comic-Con —
Gillian Owen, dressed as fictional comic book character Scarlet Witch, poses on a walkway during a photo shoot with another photographer on Day 4 of Comic-Con on July 20.
Denis Poroy/Invision/AP
Barbers dressed as pirates shave customers at the Assassin's Creed IV Black Flag Jackdaw Ship on July 20.
Sights from 2013 Comic-Con —
Barbers dressed as pirates shave customers at the Assassin's Creed IV Black Flag Jackdaw Ship on July 20.
Alberto E. Rodriguez/Getty Images for Schick Hydro
Joy Donaldson, left, dressed as Wonder Woman, and Everleigh Reed as Supergirl, take a break outside of the convention on July 20.
Sights from 2013 Comic-Con —
Joy Donaldson, left, dressed as Wonder Woman, and Everleigh Reed as Supergirl, take a break outside of the convention on July 20.
Denis Poroy/Invision/AP
Attendee Connor Sullivan, an artist and prop builder, dressed as a character inspired by the "My Little Pony" franchise during Comic-Con on Friday, July 19.
Photos: Sights from 2013 Comic-Con —
Attendee Connor Sullivan, an artist and prop builder, dressed as a character inspired by the "My Little Pony" franchise during Comic-Con on Friday, July 19.
ROBYN BECK/AFP/Getty Images
Beckham the dog enjoys the sights and sounds dressed in a Superman costume on July 19.
Photos: Sights from 2013 Comic-Con —
Beckham the dog enjoys the sights and sounds dressed in a Superman costume on July 19.
ROBYN BECK/AFP/Getty Images
DanWill McCann chose to come to the convention dressed as a character from "Ghostbusters" on July 19.
Photos: Sights from 2013 Comic-Con —
DanWill McCann chose to come to the convention dressed as a character from "Ghostbusters" on July 19.
ROBYN BECK/AFP/Getty Images
Amanda King wears an Ice Queen costume on July 19.
Photos: Sights from 2013 Comic-Con —
Amanda King wears an Ice Queen costume on July 19.
ROBYN BECK/AFP/Getty Images
An attendee in an elaborate costume makes his way through a crowd outside the San Diego Convention Center on July 19.
Photos: Sights from 2013 Comic-Con —
An attendee in an elaborate costume makes his way through a crowd outside the San Diego Convention Center on July 19.
ROBYN BECK/AFP/Getty Images
Fans dressed as "Star Wars" characters Princess Leia and Chewbacca walk down San Diego's 5th Avenue.
Photos: Sights from 2013 Comic-Con —
Fans dressed as "Star Wars" characters Princess Leia and Chewbacca walk down San Diego's 5th Avenue.
Sandy Huffaker/Getty Images
Three women dressed as characters from Cartoon Networks "Venture Bros." pose for a photo on July 19.
Photos: Sights from 2013 Comic-Con —
Three women dressed as characters from Cartoon Networks "Venture Bros." pose for a photo on July 19.
Sandy Huffaker/Getty Images
Attendee John Ash wears a Superman themed outfit as he attends the convention on July 19.
Photos: Sights from 2013 Comic-Con —
Attendee John Ash wears a Superman themed outfit as he attends the convention on July 19.
Sandy Huffaker/Getty Images
A zombie greets people as along 5th Avenue on July 19, in San Diego's Gaslamp Quarter during the convention.
Photos: Sights from 2013 Comic-Con —
A zombie greets people as along 5th Avenue on July 19, in San Diego's Gaslamp Quarter during the convention.
Sandy Huffaker/Getty Images
Gabriel Rivera shows off a costume based on Ariel from Disney's "The Little Mermaid."
Photos: Sights from 2013 Comic-Con —
Gabriel Rivera shows off a costume based on Ariel from Disney's "The Little Mermaid."
Sandy Huffaker/Getty Images
Fans play in Cartoon Network's "Regular Show" Regular Zone at The New Children's Museum on Thursday, July 18, during Comic-Con International in San Diego.
Sights from 2013 Comic-Con —
Fans play in Cartoon Network's "Regular Show" Regular Zone at The New Children's Museum on Thursday, July 18, during Comic-Con International in San Diego.
Eddy Chen/CNN
Actor, comedian and screenwriter Seth Green speaks with a fan at the "Robot Chicken" signing on July 18.
Sights from 2013 Comic-Con —
Actor, comedian and screenwriter Seth Green speaks with a fan at the "Robot Chicken" signing on July 18.
Eddy Chen/CNN
A fan dressed as Pops from Cartoon Network's "Regular Show" poses for a photo on July 18.
Sights from 2013 Comic-Con —
A fan dressed as Pops from Cartoon Network's "Regular Show" poses for a photo on July 18.
Jeremy P. Freeman/CNN
Attendees take part in Adult Swim's Fun House during Comic-Con on July 18.
Sights from 2013 Comic-Con —
Attendees take part in Adult Swim's Fun House during Comic-Con on July 18.
Eddy Chen/CNN
Fans participate in Cartoon Network's "Regular Show" Regular Zone at The New Children's Museum on July 18.
Sights from 2013 Comic-Con —
Fans participate in Cartoon Network's "Regular Show" Regular Zone at The New Children's Museum on July 18.
Eddy Chen/CNN
The "Adventure Time" booth at Comic-Con International towers over crowds of guests on July 18.
Sights from 2013 Comic-Con —
The "Adventure Time" booth at Comic-Con International towers over crowds of guests on July 18.
Jeremy P. Freeman/CNN
Cosplayer Noel Victorio is dressed as Rorschach from the graphic novel "Watchmen" on July 18.
Sights from the 2013 Comic-Con —
Cosplayer Noel Victorio is dressed as Rorschach from the graphic novel "Watchmen" on July 18.
FRED GREAVES/reuters/LANDOV
Myke Soler walks outside the San Diego Convention Center dressed as a "Star Wars" stormtrooper with his wife during Comic-Con International 2013 on Wednesday, July 17, in San Diego, California. Started in 1970, the event is estimated to bring well over 100,000 attendees.
Sights from the 2013 Comic-Con —
Myke Soler walks outside the San Diego Convention Center dressed as a "Star Wars" stormtrooper with his wife during Comic-Con International 2013 on Wednesday, July 17, in San Diego, California. Started in 1970, the event is estimated to bring well over 100,000 attendees.
Ethan Miller/Getty Images
Fans wait to walk through a giant display of Ice King character from "Adventure Time" at the Cartoon Network booth during the Preview Night event.
Sights from the 2013 Comic-Con —
Fans wait to walk through a giant display of Ice King character from "Adventure Time" at the Cartoon Network booth during the Preview Night event.
Denis Poroy/Invision/AP
A zombie character poses at "The Walking Dead" booth.
Sights from the 2013 Comic-Con —
A zombie character poses at "The Walking Dead" booth.
Ethan Miller/Getty Images
The "Ender's Game" Experience Press Preview Night was sponsored by HGTV.
Sights from the 2013 Comic-Con —
The "Ender's Game" Experience Press Preview Night was sponsored by HGTV.
Michael Buckner/Getty Images
People wait in line outside the convention center hoping to get a volunteer pass.
Sights from the 2013 Comic-Con —
People wait in line outside the convention center hoping to get a volunteer pass.
FRED GREAVES/Reuters/LANDOV
Rachel Elsten, left, dressed in a Star Trek uniform and Chaka Cumberbatch, dressed as Wonder Woman, pose outside the convention center.
Sights from the 2013 Comic-Con —
Rachel Elsten, left, dressed in a Star Trek uniform and Chaka Cumberbatch, dressed as Wonder Woman, pose outside the convention center.
Ethan Miller/Getty Images
Debbie Moss dressed up as character "Jamie Jaren" from the 1980s animated TV series "Lazer Tag Academy" waits in line hoping to get a volunteer pass.
Sights from the 2013 Comic-Con —
Debbie Moss dressed up as character "Jamie Jaren" from the 1980s animated TV series "Lazer Tag Academy" waits in line hoping to get a volunteer pass.
FRED GREAVES/Reuters/LANDOV
"The Walking Dead" Zombie Survival Machine is unveiled at the Future US Booth.
Sights from the 2013 Comic-Con —
"The Walking Dead" Zombie Survival Machine is unveiled at the Future US Booth.
Jerod Harris/Getty Images
A person dressed as a character from "Thor: The Dark World" stands guard in front of a display for the movie.
Sights from the 2013 Comic-Con —
A person dressed as a character from "Thor: The Dark World" stands guard in front of a display for the movie.
Ethan Miller/Getty Images