Last summer, Shelli Paroline and Braden Lamb traveled from Boston to the London Comic Con. Some months before, the animated series “Adventure Time” had made its European debut on Cartoon Network UK. The show had been an instant hit in the United States, and British audiences proved no different: At the London Comic Con, as at every US comics convention since the show’s 2010 premiere, fans came dressed as “Adventure Time” characters — some in white wimples with tiny ears, some with stuffed unicorns on their heads, some wearing blue prosthetic noses.
Paroline and Lamb were in London to represent “Adventure Time” comics, the popular monthly comic book series they illustrate together. Most of the time, husband and wife work out of their Watertown apartment. But eight times a year, from March to October, their publisher sends them to far-flung comic conventions where they meet fans, sign comic books, and draw sketches on request. London marked their first international appearance, and a London bookshop event made the couple wonder if they were famous.