This is a Transformable Dump Truck paper model, based on the TV series "Dai Sentai Goggle-V", the papercraft is created by ichinogami. Dai Sentai Goggle-V (also called Dai Sentai Goggle Five) is a Japanese tokusatsu television series. It was the sixth installment in Toei Company's Super Sentai series of tokusatsu television dramas. Its international English title as listed by Toei is simply Goggle V.
Goggle Dump: Goggle Yellow's mecha. It has a rectangular cavity in the back. It forms Goggle Robo's legs.
You can download the robot paper model here: Dai Sentai Goggle-V - Transformable Dump Truck Robot Papercraft Free Download [Instruction]