Spark Dolls

Spark Dolls (スパークドール, Supāku Dōru) are the transformed bodies of Ultras, monsters and Alien from various universe.

History
Some time prior to the series, a multiversal war named the Dark Spark War raged between the side of good and the side of evil side, with the participants being comprised of the Ultramen versus the monster and aliens for the universe. Meanwhile, an Ultraman named Ginga fought a dark elusive figure and losing to it resulting all of the Ultramen monsters and aliens turned into figures known as Spark Dolls and became scattered throughout the universe. Though they were still alive but imprisoned as they became dormant and slumbered. Through some unknown means they fell to Earth in a meteor shower. Years later, Hikaru Raido found the Ginga Spark and the presence of this object caused the various Spark Dolls hidden around his hometown to being to activate. In response the Villain's lackey Alien Valky began going about giving Dark Dummy Spark to corrupt minded individuals to sow chaos on earth.

List of known spark dolls:

Trivia

 * The Spark Dolls are similar to the Ranger Keys of Gokaiger, in that they hold the powers of the beings they resemble. Only in this case they are  the beings they represent.
 * The only known conscious Spark Doll appears to be Ultraman Taro, who will serve as the series narrator.