We never knew this, but Queen lead singer Freddie Mercury apparently had something for Darth Vader. The above photo came from Danish Principle, and it apparently occurred during the band’s 1980 tour. There wasn’t really any other explanation, so we Googled “Freddie Mercury Darth Vader.”
It seems this was a semi-regular occurrence. There are a number of photos of Mercury riding Vader on stage.
It appears he’s also ridden Superman and Santa Claus. Why? Probably because he was Freddie F’ing Mercury!