Glariza

is the lover of the demon Gowther.

Appearance
Glariza is quite similar in appearance to Gowther, as the doll was modeled after her. She also has a pair of little black wings on her back.

3000 years ago
Glariza is seen in Mael's memories, in which she is about to be killed by him. In her final moments, she asks for one final moment with Gowther.

Gowther
Not much is known about their relationship, but even in her final moments, Glariza wanted to see Gowther once again, and it's implied that they loved each other very much.