Tsukasa Kadoya is an interdimensional traveler who transforms into Kamen Rider Decade to oversee the fate of the multiverse, embracing his role as the Destroyer of Worlds. 

Whenever Tsukasa travels to another world, he takes on a role within it, granting him different abilities as well as all necessary needs to take on that role (ie; clothes, hairstyles, documents, etc.). Although he's never seen without his camera, a magenta colored " Blackbird Fly 135 Twin-lens Reflex Camera.