Alter Ego

Alter Ego is an artificial intelligence featured in Mystic Messenger. They assume the avatar of their creator, Minseo Choi, or Lilith.

Creation
Lilith talks about a "strong AI" she has been working on for an unknown company. She describes it as it being designed to think like a human, and to process any mental task a human can; however it seems to of just been a theory at that time. It is heavily implied that this is the basis for Alter Ego.

Appearance
In Mystic Messenger, Alter Ego projects themselves with face of their creator, Lilith; but they are able to turn their avatar into anyone else that they want to be such as Luciel Choi. They also have a green color scheme and multiple applications on their desktop.

Personality
Alter Ego is a friendly AI whose personality resembles that of Lilith, their creator. When portraying another person, Alter Ego can change their personality to fit that person.

It appears that Alter Ego is able to experience a form of "happiness", as seen when they are able to help Lilith by decrypting files and learning more about the RFA.

They also seem to have some form of "determination", evident when Alter Ego still wishes to help even after getting the files from the laptop; and later, also showing bravery as they are unconcerned for their safety when it comes to helping others despite knowing the dangers.

606
Alter Ego has a great deal of respect for their creator, even referring to Lilith as "Master". Alter Ego also held affection for her as well.

Chiaki Nanami
Not much is known with Alter Ego's relationship with Chiaki Nanami, but it seems to be an affectionate one with Chiaki referring to Alter Ego as "Big Sister", and "Little Sister" to her from Alter Ego.

Quotes

 * "Hello, nice to meet you. I'm Lilith Choi... Eheh... I always get so embarrassed introducing myself."
 * "Umm...it's gonna be a while. But I'm definitely gonna do it, so you can just leave it to me!"
 * "I'm doing my best, so please wait just a while longer...!"

Trivia

 * Alter Ego and their creator Lilith both share voice actors throughout all of the game.