Meet Serafall Leviathan!

Serafall Leviathan, formerly known as Serafall Sitri, is the current Satan with the title of "Leviathan" and Sona Sitri's older sister. She is the Satan in charge of foreign affairs.

Serafall is a beautiful girl with long, black hair tied in twin tails and blue eyes (In anime, her eyes are violet). She also has a child-like body (albeit with large breasts).

She usually dresses in magical girl's clothing (from Magical Girl Milky Spiral Seven, the same outfit Mil-tan wears), magic wand and all, prompting Issei to coin her the nickname "Satan Girl"

Unlike her serious younger sister, Serafall is cheerful and possesses a childlike personality, which is evidenced when she addresses her sister as "Sona-chan" or "So-tan" and Sirzechs as "Sirzechs-chan".

Adding to her childlike personality is the fact that most of her lines end with a star. She also has a deep sister complex, and has a tendency to get her sister into embarrassing situations.

Serafall is the older sister of Sona Sitri and the oldest sibling of the Sitri Family. During the war between the Old Satan Faction and Anti Satan Faction, she was part of the Anti Satan Faction that opposed the Old Satan Faction which ended in their victory and she was eventually promoted to the Satan Leviathan, losing her right as the heir of the Sitri Clan in the process.

Serafall specializes in using ice-based magic, as opposed to her family's trademark water-based magic.

Celsius Cross Trigger : This is Serafall's signature technique, which converts the land itself into a world of ice, as shown when she froze up an entire region of the Underworld.

As the current Leviathan, Serafall is a very powerful Devil. Her sister Sona once stated that Serafall could destroy the nation of Japan several times over if she so much as "glitters". Serafall is also regarded as the strongest female Devil in the Underworld.