There are few who have made a mark on 2018 quite like BTS, the seven member Korean K-Pop group that is singlehandedly reviving the Age of the Boyband with their electric tracks, explosive dance routines and unnervingly perfect hair. BTS may have been catapulted to international acclaim this year, but there's still a whole world of facts and stories from the six years it took for them to become the first K-Pop act to hit No. 1 on the Billboard charts...