Mili

Mili is a Syzy'Jin and one of Soriel's six maidservants handpicked for him by Nen. She is one of the most powerful Maidservants, being a high-order demon with control over the Gravity attribute.

Biography
Mili, like the other Maidservants was taken in by Nen at a young age. She is a Syzy'Jin, like Nen and therefore a higher-order demon. This makes her arguably the strongest Maidservant though not much is known about them for now.

In-Game
This section may contain story spoilers. Mili is encountered in chapter 1, chapter 3 and chapter 5.

In chapter 1 she is being "bullied" by some Fire Imps (though Soriel notes she can easily obliterate them) and asks Soriel to stop them from "bullying" her.

In chapter 3, she is sent by Nen to give a glyph gem to Soriel. She is encountered at the East Lava Tube at the beginning of the game and will initiate a conversation with Soriel once he gets close enough.

In chapter 5, she is encountered after the main point of the Throne Room events where it is revealed that she had been shadowing Soriel for much of his journey and as a contingency in case something should happen to him. However, this goes awry as Mili had not done as Nen instructed.