Q&A sessions with standout celebrities John Barrowman (“Torchwood,” “Doctor Who”), James Marsters (“Buffy the Vampire Slayer”), Jason David Frank (“Mighty Morphin Power Rangers”), group sessions with the stars of “Doctor Who” ( David Tennant and Billie Piper ), Justice League ( Ezra Miller and Ray Fisher ), “Torchwood” ( Gareth David Lloyd, Naoko Mori ), the “Women of Pop Culture” (Holly Marie Combs, Charisma Carpenter), anime, video games, cosplayer and comics creator sessions, adult and kids costume contests and more highlight the programming offerings at Wizard World Comic Con Cleveland , March 2-4 at Huntington Convention Center of Cleveland. Most programming is included as part of the standard event admission and is in addition to the live entertainment options (dancing, music, etc.) all weekend. Some highlights of the more than 50 hours of panels scheduled include: Interactive Q&As with Barrowman (Saturday, 2:15 p.m.), Frank (Saturday, 2:30 p.m.), Matt Ryan (“Co