Boom! Studios's Darkwing Duck comic series was originally to be a four-part mini-series and was announced on March 13, 2010, at the Emerald City Comic-Con. Due to positive fan reaction Boom! Studios chose to extend it to an on-going, with the mini-series, "The Duck Knight Returns", comprising the on-going's first story arc. The series came to an end in 2011 and was picked up in 2015 by Joe Books to be continued.