Sentinel Energy

Sentinel Energy, also known as Wraith Energy or Wraith Essence, is the untainted essence derived from the Wraiths prior to their imprisonment. Sentinel Energy has many extraordinary properties with a seemingly endless number of uses, powering mighty machines and spaceships like the Fortress of Doom, to granting individual takers superhuman physique.

This energy is stored in giant "Sentinel Batteries" which can be inserted into the machines at various key locations.

Sentinel Energy and Hell Essence are use to create Argent Energy, an extraordinarily powerful fuel source that could end or enhance life.