Where can you see the Doctor, Darth Vader and a life-sized dinosaur?
The answer is at the racecourse, home to the York Unleashed Comic-Con this Sunday.
Paul McGann, who starred as the eighth Doctor in the 1996 Doctor Who special as well as in many audio dramas, is one of the star guests.
Spencer Wilding, who donned the iconic Darth Vader helmet and cape in Star Wars film Rogue One, is another guest.
Jimmy Vee, who played R2-D2 in two other Star Wars adventures, as well as starring in Doctor Who, is there, along with Jon Campling, aka King Regis from the epic Final Fantasy franchise, and stuntwoman and actor Arti Shah (World War Z, Rogue One).
Nightcrawlers and superheroes
Meanwhile there’s all manner of other colourful things to see and do at the comic con.
There’s Contract Wrestling on the decking; the Sith Challenge – can you take on Darth Maul and Kylo Ren and live to talk about it?
Listen to Taiko Japanese Drumming and cheer on the Celeste St Clair’s Lip Sync Battle.
And of course there’ll be lots of cosplayers, from the horror-themed Nightcrawlers to superheroes and Ghostbusters.
Plus a VR gaming area, movie sets and props, owl flying displays and dozens of traders selling everything from autographs to action figures.