Disgruntled Jewel Beast Agmass

ORIGIN:
An ancient warrior traveled the land on a quest to defeat evil demons and find secret jewels of power.  When he had collected every jewel, he climbed a sacred mountain to enter a mysterious temple and place the jewels inside a statue that would give ultimate power. He realised he had an extra jewel and didn't know where to place it, so he tossed the extra jewel into a lake. After receiving ultimate power, the warrior left to have new adventures. Later, the extra jewel absorbed the lake water's energy and formed into the monster Agmass. Angry at being tossed away, the kaiju tracked down the warrior and beat him senseless.

ABILITIES:
Boom Crasher: floats headlong into enemy to cause great damage
Mountain Form: turns into a mountain
Jewel Storm: heads opens up to reveal jewel inside that emits powerful energy storm