Celebrity appearances and photo ops, panel discussions and a host of other special events take center stage at Texas Comicon, a three-day celebration of sci-fi/horror, comic books, gaming, exhibitors and artists. The motley crew of actors scheduled to attend include Michael Dorn (Lt. Commander Worf from the Star Trek franchise), Tony Todd (the title character from Candyman), Spencer Wilding (Humbaba from The Legend of Hercules) and Erik Estrada (Officer Ponch from TV’s CHiPs). Panel discussions during the event include “Superheroic Science,” an examination of “the real life implications and scientific issues of having superpowers” and a Q&A with actors Steve Cardenas and Yoshi Sudarso, who star in separate Mighty Morphin Power Rangers series. Also on the slate: trading-card gaming, model building, costume contests, dance performances and lightsaber and parkour demos. And while it’s not on the agenda, there’s sure to be some major Pokémon hunting taking place outside the venue. Here’s hoping there are a few Snorlax hanging around. $15-$55, noon- 9pm Fri, Jul. 29, 10am-9pm Sat, Jul. 30, 10am-6pm Sun, Jul. 31, San Antonio Event Center, 8111 Meadow Leaf Drive, (210) 528-0434, texascomicon.com.