Ultraman Ginga
The similar concept reused from the past series "Ultraman Ginga" and its successor, "Ultraman Ginga S", are the embodiments of Ultramen and other Ultra Monsters but unlike the aforementioned past series, instead of being Ultramen and monsters that were cursed into these dolls, they are OOPArts on Earth studied by several researchers, among them being Takashi Ozora, Daichi's father. As a result of the Ultra Flare, these Spark Dolls were given life as rampaging monsters in the worldwide which Xio fought till nowadays. Eventually, it is also revealed that Earth is not the only planet with it. As shown, alien planets like planet Gold developed their own Spark Doll, Rudian, which was used by the planet's royal prince, tE-rU. They were also seen as useful monster weapons sought by intergalactic outlaws like Alien Zarab, Alien Nackle Bandello etc.