Just ask “Sharknado” super fan Homer Hernandez from Corpus Christi, who dressed up as the titular dorsal-finned storm in a giant foam costume sewn with plush sharks, just for meeting Ziering and his “Sharknado” co-star Tara Reid. Terror Expo celebrates the stuff of slashers and the supernatural, highlighting horror’s most enduring boogeymen/women, as well as villains from sci-fi and just about any other dark corners of entertainment. Other Terror Expo celebrities included Tobin Bell, the twisted Jigsaw from the “Saw” films, and stars from the hit AMC horror series “The Walking Dead.” Like many famous faces in town for Terror Expo, Ziering gushed about the fun he’s had with his own franchise, and how “Sharknado” continues to scare up fans. [...] many such demented characters came to life on the Terror Expo floor, with numerous con-goers dressed as their favorite horror film heroes and antiheroes. Besides the downright scary array of men and women as Freddy Krueger, several attendees rocked the hockey mask and machete of that towering terror Jason Voorhees from the “Friday the 13th” films. “I think it really shows people the different depths of the genre that you want to represent,” said Jessica Menchaca, who wore the skeletal face paint and festive garb of La Catrina, the Mexican folk art representation of the dead.