Glasya
Glasya is a powerful archdevil and the ruler of the sixth layer of the Nine Hells. She is the Daughter of Asmodeus and by far one of the most dangerous individuals in all of the Hells. She is sometimes referred to as the Princess of Hell.
Personality
Glasya has been described as fickle, capricious, and temperamental, with a major rebellious streak. She's been described as the "least predictable of the archdevils."
Appearance
Glasya is known to take on a variety of forms, but she usually chooses to manifest as a lithe and sultry feminine figure. She typically appears with coppery skin, small horns, leathery wings, and fangs. She is often described as looking much like a succubus.
Relationships
Glasya is the daughter of Asmodeus, and their relationship is extremely complicated. She claims to love him, and she certainly takes advantage of the fact that he's her father, but she also sometimes openly schemes against him. The identity of her mother is unknown.
Most of the other archdevils hate Glasya, but they are often too scared to oppose her, since making a move against her might be perceived as a move against Asmodeus. The only archduke who doesn't hate her Fierna. They were apparently friends even before Glasya became an archdevil, so that's cool.
The archdevil Azaphiel is subordinate to her, and is one of her principal supporters.
Perhaps the individual Glasya hates most is Levistus.