Specium

Specium, or Spacium, is a fictional substance present in the Ultra Series. It is found in abundance on planet Mars and is naturally generated by Ultras in the Nebula M78 Timeline. It is a highly destructive substance, as it is used in the signature attacks of all Ultras, the Ultra Beam and the various other energy-based abilities of Ultras. In Ultraman Mebius, it is implied that all Ultras, at least in the Nebula M78 timeline, have their energy based on Specium and their defference in beams is caused by them manipulating the element differently.

Also See

 * Ultra Beam
 * Ultra's Inner Light