Apocalypse Key Marzeh

ORIGIN:
When a strange Cloud Of Apocalypse Gas descends upon the Galactic town of Ponum, the ancient and wise citizens learn that the monster responsible, Marzeh, is actually a 'living key' that, if unlocked, will release an army of 500 kaiju.  Dynrathe arrives to battle the monster, and everyone is afraid that destroying Marzeh will unlock him. This, of course, happens.

ABILITIES:
Apocalypse Gas: gas that signals the buildup of 500 monsters
Marzeh Swarm: divides self into countless smaller version to overwhelm opponent
Battle Thunder: explodes itself and causes massive thunder damage