Mammetum, the Visage of Transfiguration.
My favorite Visage of all the Fifth House. Mammetum worked with change, allowing life to grow and evolve, someone worked with Ishhara to develop the transformation of sensual attraction, someone came up with jokes, metaphors and irony. Transformation had many uses. Naberus was Yukon's brother. While his sister was creating the famous cold river, he was working on the now forgotten and time-buried underground river. Or rather on its water surface and constructing a reflection in the mirror of water. In his spare time, he danced to her songs. In a way, he was a wingman because bonding with his sister was extremely important to her and he was rarely separated from her. Both before the Fall and after it.
His own role, the fact that he was not essentially a creator but only a reflection of the current world, both in his work and in his appearance, weighed on Naberus. He was looking for his place in a changed world, but didn't know what to grab onto and just followed his sister. No, he wasn't willless, but … When they say depression has no face, sometimes it literally has no face. Just like him. It's just a mirror.
At some point he realized that he was leaving the Silver Legion, following Yukon, that by also following her, he was helping her punish greedy people. His soul wasn't the purest as it was, but now there was more and more Torment in it. He didn't have a heart as it was, but he knew where it was in humans. Maybe if he punched a hole in his chest, it would get easier? Maybe those voices would go away? Maybe even without a symbolic heart he could get rid of those feelings? He hoped. He longed to feel nothing, to be just a heartless mirror, since there was no other fate in store for him.
Not surprisingly, he was attracted to a dying artist in deep depression. He was suffering from failure, from his illness, every day was torture for him and he decided at some point to end it. The song of sorrow reached Naberus' ears and he picked it up in his dance leading to freedom, to a new body. Amazing beauty, demonic charm, a little magic and Matthew - that was the name of that unfortunate man - achieved something he never dreamed of in his previous life. In his life. Naberus found fans, prosperity, found a sister to his great relief. But… even without the heart, those feelings never went away. And with a human one, they gained new strength. He would always be just a mirror, nothing more. Always.