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 Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

 Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

 Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

 Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

 Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

 Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune) 

Costumes and cosplay from Friday, April 6 and Saturday, April 7, 2018, at the Chicago Comic & Entertainment Expo at McCormick Place in Chicago. (Erin Hooley/Chicago Tribune)