Time for another round of cosplayers having a good time as Beat Down Boogie posts a video of what they saw at the Katsucon 2017. An annual event cosplay event, the Katsucon 2017 took place in National Harbor, Maryland last 17-19 February 2017. Katsucon is an annual 3-day fan convention held in the D.C. metro area for multicultural enthusiasts and entertainment and is produced by Katsucon Entertainment, Inc. (KEI).