Little is known about Agrathor. The strange black-armoured Agori is originally from Vulcanus. That much is certain.
He wore a mask, which gave him strange powers to do with the dead. The mask kept him alive. Whenever he died, it resurrected him, much to his grief. Agrathor was at the stage with the mask ruining him that he wanted to die more than anything else in the world.
Telzira took a shine to him, trying to protect the unfortunate Agori as best she could - to no avail, in the end. Part of his mind still echoes with her though. It's unsettling.
Surt, Fenrir's brother, dwelt within the mask. When he got the oppertunity, he left Agrathor - killing him - and embedded his spirit into Telzira... The resulting mind-battle left both of them reeling. Drachen intervening (and taking Drachen's life in the process) removed all of the darkness in Surt, and he inhabited his own suit of armour. Telzira somehow ended up kaita'd with Surt's body. Blame Quantum.
Agrathor met both Levit and Fenrir - and severely regretted it.
Vampirik bite. "Yaaargh!"
"You don't like me when I'm unhappy."
Agrathor here is slightly more complex than his earlier version, with my helmet design. It's made so the mask (vladek's helm) can fit into it... if I sould find where I left it.
Other than that, the MOC isn't that special. He's not supposed to be - he's just a simple agori, after all.