Kamen Rider OOO (仮面ライダーOOOオーズ, Kamen Raidā Ōzu) is a 2010-2011 Japanese tokusatsu drama in Toei Company's Kamen Rider Series, being the twelfth series in the Heisei period run and the twenty-fifth overall. It began airing on September 5, 2010, the week following the conclusion of Kamen Rider W,[1] joining Tensou Sentai Goseiger and then Kaizoku Sentai Gokaiger in the Super Hero Time lineup, until its conclusion on August 28, 2011. The catchphrase for the series is "I'll transform!!!" (俺が変身する!!!, Ore ga henshin suru!!!). The average ratings of the series was 6.93%.[2]