Stegavaar

The Stegavaar was a creature from a template challenge on Sporepedia. It's bio is as follows.

"A solitary, dangerous creature, Stegavaar burrows through the eternal rock of its planet’s mantle and crust seeking the loren, the rare and precious underground rivers in which to spawn millions of creatures like itself in hopes of one day conquering the surface.

Stegavaar has the power of devastating bio-electron beams--living lightning. Charging at speeds that belie its cumbersome appearance, and protected by its impenetrable bio-armour, Stegavaar is nothing less than a living tank. Should Stegavaar ever fall in battle, its final act will be an electron explosion of vengeance that slaughters all who are nearby."