Energy Crystal

The Energy Crystals are objects that appear in the Sonic the Hedgehog television series. They are a type of energized crystal located beneath Mobius' surface.

Description
The Energy Crystals are blueish-green crystals that can be harnessed to produce energy. However, they are extremely vital to the sustainment of Mobius' eco-system, as removing them from their resting place can prove catastrophic.

History
When a giant Energy Crystal was discovered in the Crystal Mine, Dr. Robotnik planned to replace his limited oil supply with it, either unaware or not caring that removing a crystal like that would destroy Mobius' entire eco-system. Before the giant Energy Crystal could get hoisted out of the mines though, the Knothole Freedom Fighters and Chuck were able to sabotage Robotnik's operations.