Board Thread:Questions and Answers/@comment-679780-20170307200224/@comment-477304-20170307211527

The Tails Doll actually moves? Ah, I wasn't sure if it did.

Honestly, "power plant" does sound like a mistranslation; perhaps it was just suppose to be called a power source, or something to that effect. It could be some sort of gem; artwork is too low poly to tell.