Kaizoku Sentai Gokaiger aired in Japan in 2011 as the 35th Super Sentai series, following a team of space pirates who could transform into heroes from earlier seasons using Ranger Keys. That anniversary concept made its transformation sounds especially recognisable to tokusatsu fans, because each henshin recalled decades of earlier shows. Clips later circulated on soundboards and in fan edits outside Japan, where the Gokaiger name became shorthand for a flashy pirate themed power up. It remains popular with cosplayers and editors who grew up with Super Sentai and its Power Rangers adaptations.