Dennô Senshi Porygon

Earned the Guinness World record for Causing the Most Convulsions (seizures) ever, after sending 685 viewers (310 boys, 375 girls) to the hospital resulting from bright and rapid flashes. As a result, the producers were forced to go back through the previous episodes and dim the lighting on them so as not to cause an incident of this magnitude again. Following the incident many Japanese Broadcasters joined to ensure this event wouldn't happen again. As a result some new guidelines were introduced: Flashing images, especially those with red, should not flicker faster than three times per second; If the image does not have red, it still should not flicker faster than five times per second; Flashing images should not be displayed for a total duration of more than two seconds; Stripes, whirls and concentric circles should not take up a large part of a TV screen. Known as the "seizure episode", this episode has been banned worldwide after airing only once in Japan.

While the two Porygon fight, one of Misty's shoes is miscolored green.

Featured in BBC World News: Episode dated 17 December 1997 (1997)