"Aquaman" Jason Momoa, “Smallville” stars Tom Welling, Michael Rosenbaum and John Glover, Sean Astin (The Lord of the Rings, “Stranger Things 2”), Chad Michael Murray (“One Tree Hill,” “Agent Carter”), Matt Ryan (“Constantine,” “Legends of Tomorrow”), the “Charmed” trio of Holly Marie Combs, Brian Krause and Drew Fuller, Butch Patrick (“The Munsters”) and Thomas Ian Nicholas (Rookie of the Year, American Pie) are among the highlights as dozens of celebrities and industry professionals at the 2019 Wizard World Cleveland, part of North America’s largest pop-culture touring expo, March 8-10 at the Huntington Convention Center of Cleveland.