*Spark Dolls: A gimmick introduced during Ultraman Ginga's season. They are, at first, the result of Dark Lugiel turning a large number of Ultras, monsters, and aliens into action figure-like items. Side effects of being turned into Spark Dolls are the sealing of their consciousness, and their time stopped. Later Spark Dolls during Ultraman X's time only appear to have one of the effects, with the sealing of their consciousness absent.
Now that I think about it, doesn't turning someone into Spark Doll somewhat counts as Power Null somewhat? With only his consciousness still intact, Taro was able to use some of his powers. I'm not planning any changes, just thought it was worth asking.