Sonic: War of the Power and Astro!

Sonic: War of the Power and Astro! is the 2011 crossover film between Sonic: Astro Rider and Sonic: Power Rider in the same vein as the Movie War 2010 and Movie War Core. It features the casts of Sonic: Astro Rider and Sonic: Power Rider and aired in Japanese and English theaters on December 10, 2011. The catchphrase for the movie is "In Winter 2011, Movie War Will Evolve".

Movie War Mega Max featured the first seven Masked Rider Warriors (Warrior Leader, Lieutenant, Commander, Super-V, V3, Riderman, and X) to commemorate the franchise's 1st season of the Sonc Riders. Trailers for the film shown during airings of Astro Rider also showed the return of Duo Rideras well as a new form for Power Rider.