Haggarium is a new type of dark energy in the Voltron Universe.
Voltron Force (TV series)
Haggarium is the essence of the witch Haggar and was harnessed by Maahox from the Hagger Quasar.  Haggarium is now used in all of the new Robeasts, also it can power up machines and weapons. Haggarium can drain the mystic energy that powers the Voltron Lions, the only thing that can combat it is Vince.
- It is possible that Haggar died prior to  the beginning of the Voltron Force series.
- Haggarium is like an anti-Voltron energy source.