Name: Teneraus
Age: around 5,500
Species: Alicorn
Gender: Male

Cutie Mark: A mask with triangles.
Talent: Darkness and Destruction Magic

Bio:
Teneraus, alongside his brother Lux, helped create Equestria in the past.  And alongside that, he and Lux created the stone golem ponies.  However, Teneraus was jealous of Lux.  This jealousy caused a war to ignite between the two and their stone golem armies.  With their strength having been drained from the fighting and most of the stone golems destroyed, Lux and Teneraus retreated to different places to rebuild their strength.

Nowadays, Teneraus hides beneath Equestria's surface, and he tries to use his magic to tempt other ponies and beings to join him in overthrowing his brother once and for all.