 While the series is known as "Iron Kid" in South Korea, Spain and other non-English-speaking countries, it is known as "Eon Kid" in the English-speaking countries except in South Africa, the United Kingdom and Ireland due to legal concerns.It premiered in Korea on KBS2 on April 6, 2006 and on TVE in fall 2006.In the United States, it is distributed by Manga Entertainment and premiered on The CW's Saturday morning Kids' WB block September 22, 2007.