Is Black Siren going to be the big bad in Arrow season six? What’s happening with the flashbacks next season on Arrow? Where next for Olicity? Will AAARRRGGHH!!! return to Trollhunters? And what were those Trollhunters Easters eggs in the Arrowverse, and will there be any more. Marc Guggenheim, executive producer on Arrow, DC’s Legends Of Tomorrow and Guillermo de Toro’s hugely acclaimed Netflix series Trollhunters, settles down with globetrotting MyM BUZZ reporter Tanavi Patel at WonderCon 2017 in Anaheim to talk about all this and more (including, who’s the equivalent of Back To The Future’s Biff on Legends?).