(Japan 2009) (Many Thanks to Doctor 5000)
This is not a horror Movie but is directed by Takashi Miike (one of my favorite asian horror directors, just thought it would be interesting for you all to watch)
Gan, the only son of the owner of Takada Toy Shop, and his girlfriend, Ai, are inseparable. They build Yatterwoof, a dog-shaped robot that shares their will, and together with a small robot named Toybotty, they form a fighting team to protect world peace.The mysterious Skull Stone has been split into four pieces and lost over the world. When Gan and Ai learn of the Doronbow Gang sinister plot, they stand up against the villains and use their various mechas to foil their plans.