Ahead of the event's arrival we thought we'd remind you what to expect with a few choice shots of cosplayers from previous shows.
So don't be surprised if you see a wookie chatting with Smaug on the DLR.
Joining the likes of Gillian Anderson will be stars from Once Upon A Time, NCIS: Los Angeles, Falling Skies and Jekyll and Hyde.
MCM London Comic Con is the UK’s biggest modern pop culture event and runs from Friday, May 22 to Sunday, May 24.
Want us to show off your costume? Tweet a pic of it @the_wharf.