Xalmor is a living, self-aware being of Helxar that was formed from corrupting enough souls of the continent- Xandu. He is barred from Xandu because of the massive, continent-spanning wall- the Dragonspine... and a group called the Lumen Enclave had found two stones called the Ying-Yang stones that also bar him and the Helxar's foul influence from spreading to the entire continent. He has been living in his abode, biding time... gaining strength for eons.
The massive, furry dragon sighs as he curls in around himself, hugging his non-existent legs as he rests in his abode the mortals of Xandu call the Chains of Urgannon. His skull-like face show no expression, and the spikes all over his back and arms scratch the stony floor. He has been here for excruciating eons... hungering, craving... suffering. He had been here so long that he had forgotten time continued to flow from the outside of the caverns. He's brooding as he thinks and speaks to himself.
"Hmph... Can't believe I'm barred from my demesne from a wall of muck and dirt passing for a wall..."
He refers to Xandu as his demesne, as he wants to take over the entire continent. However, the Dragonspine bars him from even exiting the Chains of Urgannon. He suddenly gets an evil grin on his face as he gazes at his huge, razor-sharp claws.
"Huehuehue... The time is at hand. I've been gathering enough strength for all these countless, excruciating eons... I'll show those hypocrites... those vermin of the Lumen Enclave!"