Thought Bubble Comic Conventions, the biggest independent comic convention in the UK, runs next weekend at the Harrogate convention center in Leeds. The convention is curated by Tula Lotay and focuses specifically on comics, creators, and art, and Collider got a sneak peak at some of the exclusive prints that will be available. First, there’s a truly awesome Back to the Future set by Florey, depicting the Hill Valley clock tower in both 1955 and 2015. There’s also a righteous Thundercats print by Henrik Sahlstrom that demands to airbrushed onto the side of a prog rock band’s …