Dressed as Hela from Thor, Calista Fyfe of Dallas (right) poses with Gary Andrew of Garland, Texas (Thor) during Dallas Fan Days at the Irving Convention Center in Irving, Texas, Saturday, October 21, 2017.

Dressed as Hela from Thor, Calista Fyfe of Dallas (right) poses with Gary Andrew of Garland, Texas (Thor) during Dallas Fan Days at the Irving Convention Center in Irving, Texas, Saturday, October 21, 2017.

Tom Fox/Staff Photographer

As is an annual tradition, Dallas Fan Days (the sister show to Fan Expo Dallas, formerly called Dallas Comic Con) took over the Irving Convention Center over the weekend with wonderful costumes and more geekery than you can shake a gaderffii stick at.

There were also celebrity guests, including Doctor Who star David TennantGame of Thrones' Kristian Nairn, Riverdale's Madelaine Petsch and more.

Here is some of the coolest stuff we saw.

Lucas Hightower (Green Lantern), 8, of Bryan-College Station, Texas (center) receives a fist bump from Patrick Belcher (Spiderman) of Richardson.

Lucas Hightower (Green Lantern), 8, of Bryan-College Station, Texas (center) receives a fist bump from Patrick Belcher (Spiderman) of Richardson.

Tom Fox/Staff Photographer
(from left) Kiely Pittman of Plano, Texas, Kate Burr (obscured) of Denison, her sister Juliana Burr, Taryn Lasater (black and white stripes) of Plano, and Ryan Burr (blue hair, obscured) and applaud other characters as they dance.

(from left) Kiely Pittman of Plano, Texas, Kate Burr (obscured) of Denison, her sister Juliana Burr, Taryn Lasater (black and white stripes) of Plano, and Ryan Burr (blue hair, obscured) and applaud other characters as they dance.

Tom Fox/Staff Photographer
Dressed as the character Miss Argentina from the movie Beetlejuice, Nicole Evans of Denton poses for a photo.

Dressed as the character Miss Argentina from the movie Beetlejuice, Nicole Evans of Denton poses for a photo.

Tom Fox/Staff Photographer
Rachel Maddalena of Lewisville as an Orion slave girl from Star Trek.

Rachel Maddalena of Lewisville as an Orion slave girl from Star Trek.

Tom Fox/Staff Photographer
iBlue Cosplay

iBlue Cosplay

Tom Fox/Staff Photographer
Danielle Deraleau (Rapunzel) of Dallas, left, and Alec Crow (Flynn Rider) of Irving

Danielle Deraleau (Rapunzel) of Dallas, left, and Alec Crow (Flynn Rider) of Irving

Tom Fox/Staff Photographer
Kristian Nairn, who plays Hodor in Game of Thrones, visits with a fan.

Kristian Nairn, who plays Hodor in Game of Thrones, visits with a fan.

Tom Fox/Staff Photographer
Madelaine Petsch (center), who plays Cheryl Blossom in the television show Riverdale, has her photo taken with fans Jillian Price of Houston (left) and Lauren Hightower of Bryan-College Station.

Madelaine Petsch (center), who plays Cheryl Blossom in the television show Riverdale, has her photo taken with fans Jillian Price of Houston (left) and Lauren Hightower of Bryan-College Station.

Tom Fox/Staff Photographer
People dressed in fictional characters take a break on the outdoor plaza.

People dressed in fictional characters take a break on the outdoor plaza.

Tom Fox/Staff Photographer
Dressed as Harley Quinn of Suicide Squad, Emily Pearson of Euless (center) poses with her sister Hannah Pearson, left, (Mal of the movie Descendants) and brother Nathan Pearson (Spider-man).

Dressed as Harley Quinn of Suicide Squad, Emily Pearson of Euless (center) poses with her sister Hannah Pearson, left, (Mal of the movie Descendants) and brother Nathan Pearson (Spider-man).

Tom Fox/Staff Photographer
People gathered around a game table to play Dungeons and Dragons.

People gathered around a game table to play Dungeons and Dragons.

Tom Fox/Staff Photographer
Dressed as character Sebastian Michaelis, Zoey Thornton, right, spins her friend Amanda Dabila, dressed as character Erza Scarlet, as they dance to the music playing outside.

Dressed as character Sebastian Michaelis, Zoey Thornton, right, spins her friend Amanda Dabila, dressed as character Erza Scarlet, as they dance to the music playing outside.

Tom Fox/Staff Photographer
Dressed as fictional character Jedi Belle, Autumn Roberts of Irving poses with her lightsabers.

Dressed as fictional character Jedi Belle, Autumn Roberts of Irving poses with her lightsabers.

Tom Fox/Staff Photographer
Tristan Stone (Leather Face) of Arlington, left,  and Jerome Espinosa of Arlington (Jason) pose in a green screen video booth.

Tristan Stone (Leather Face) of Arlington, left, and Jerome Espinosa of Arlington (Jason) pose in a green screen video booth.

Tom Fox/Staff Photographer
Dressed as Snow White, Nikki Britten of Dallas (right) poses for a photo with Keith Wright (Bobby) of Dallas.

Dressed as Snow White, Nikki Britten of Dallas (right) poses for a photo with Keith Wright (Bobby) of Dallas.

Tom Fox/Staff Photographer
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