Marek "The Punisher" Piotrowski is a Polish retired heavyweight kickboxer and boxer. He is a former ten time kickboxing world champion.

The ISKA is one of the major international bodies regulating sport karate and kickboxing matches. It is based in the United States. It was established in 1985 as a response to legal and revenue issues that sent the Professional Karate Association (PKA) into decline.