PHILADELPHIA, June 11, 2014 – Question-and-answer sessions featuring Marvel’s Guardian of the Galaxy standouts Dave Bautista (Drax the Destroyer), Karen Gillan (Nebula) and Michael Rooker (Yondu), “Firefly” headliners Nathan Fillion and Alan Tudyk,“Doctor Who” stars Matt Smith and Karen Gillan, David Boreanaz (“Bones,” “Angel”), Whoopi Goldberg (“Star Trek: TNG,” Ghost), Christopher Lloyd (Back To The [&hellip