Yulli

Yulli (also spelled Yulii) is a demon serving as a palace maid in the kingdom of Evangale.

Appearance
As a demon, Yulli is able to shapeshift into anything she wants. She frequently takes on the appearance of a raven, but has a preference to take on the appearance of cute things. She will, however, take on the appearance Deor prefers her to be in. She has also been known to take on the form of a human that bears a resemblance to Deor, although a female form.

Personality
Yulli tends to be pretty jovial and enjoys teasing Deor. She is also rather protective of him and will faithfully follow him. She calls Deor "Deorsum," much to the prince's annoyance. She has a fondness for cute things, which she notes as she takes on the form of a puppy.

History
Her history was long forgotten, in agreement with Vincent Evangale, Yulli was to protect Deor by Vincent's request, and in return, Vincent will assist Yulli on regaining her past memories.

Plot
Yulli observed King Evangale's announcement on inheriting the throne. She later stalked Deor as he wandered the castle halls.

Later, Yulli took on the form of a raven to follow Deor, and detached a part of herself to help accomplish other things. Unknown to Deor, she diverted an assassin's attention from Deor by posing as him. She returns to her raven form and decides to stick closely to Deor, usually sitting on his head.

During the royal banquet, demons are unleashed throughout the castle. As Deor runs to find Dante, Yulli reveals her true nature to Deor, berating him for leaving Solaris's protection. However, she transforms into a cat and helps lead Deor to Dante. She re-unites with her shadow and helps Deor fight off Sasha. Additionally, after Sasha destroys part of Deor's body, thus revealing that he is a demon, Yulli explains to Deor what he really is and then whisks him away before anyone else discovers him. She explains to Deor how to restore his body, and offers herself to fill in the empty space while it regenerates.

Following this, Yulli changes her appearance to that of a human maid named Angelica. She is the only person allowed to tend to Deor while he grapples with his existence as a demon. She reports on Deor's training progress and recommends Deor be sent to a neighboring kingdom for more extensive training.