Fans flood San Diego Comic-Con at Wednesday's preview night

Judy Hawkins, left, of San Diego, Calif., reacts as a zombie character approaches her at the "Walking Dead" exhibit on the convention show floor during Preview Night of the 2017 Comic-Con International on Wednesday, July 19, 2017, in San Diego, Calif. Jose Davalos of the Cinema Makeup School walks through the convention floor crowd dressed as the "Haunted Mansion" character "Hatbox Ghost" during Preview Night of the 2017 Comic-Con International on Wednesday, July 19, 2017, in San Diego, Calif.