Ragnium

Ragnium is a substance that appears in Sonic Boom: Fire & Ice.

Description
Ragnium is a powerful fuel underground, it can help upgrade robots become faster and powerful. Mining too much of it would damage the enviroment.

History
Doctor Eggman discovers the element, and decides to harness it for himself. He uses the fuel to make his henchmen robots faster than Sonic. He has D-Fekt to mine the element from the ground, causing damage to the enviroment.