I have not really followed the series much however I overheard something on the show that caused me IMMEDIATELY to stop my children from watching it. The main character has a best friend Joey. He was being "controlled"...ie POSSESSED by another person! The thing that clued me into was the fact that his voice had a evil voice over it. Imagine someone talking however a voice in the back that sounded deep, distorted, and demented. Honestly it really shocked me. I heard the voice and it almost gave me chills. I honestly feel that Yugioh can be a stepping stone to occult behavior. I sincerely believe that if children are playing with an older child that is into occult activity a younger child my just take it as "playing like they do on Yugioh". I can not express how disturbed I was to see a POSSESSED person on a cartoon. I strongly urge parents to watch the cartoons their kids do.