Quote Originally Posted by Griffey View Post
My headcanon is that the garb is Meracydian, and that the bosses who wear them in CT are all Meracydian heroes, captured and brainwashed to serve Allag for all eternity...

...which isn't much of a stretch really. We know that Phlegthorn was a rebel against the empire who met that fate. It's entirely possible that he sought help from the Meracydian Goddess nation, who gave him arms and armour to fight against Allag. I don't think we have much lore on Scylla and Glasya Labolas to back that up.
Glasya was an Imperial Honour Guard who willingly chose to be experimented on, and got immortality to serve the great Emperor Xande forever.

Scylla was a rival of Amon who reluctantly got talked (tricked) into the modification experiments, when she came to she was surrounded by the very creatures she hated most - hounds.