Cartesia

"I am all the despair of this world-humanity's child, and its mother. Those who are aware of my existence refer to me as Cartesia".

Cartesia is the final boss of Stella Glow.

Appearance
Cartesia's appears similar to both Eve and Marie albeit a bit older; her upper body is that of a human female with white skin, teal-green hair that extends beyond the length of her body, large breasts that are covered with a black mass, and her hands are bound behind her head by a giant crystal. Her lower body is monstrous; giant egg-shaped heads seemingly made out of the chaos that fills the spirit world, with sorrowful faces carved into them, giant arms on each side of her, and a mass of black tendrils that extend from her hair and surround her body.

Personality
Cartesia speaks in a soft-spoken voice that sounds calming and soothing even when she says things that are disturbing. From listening to the suffering of all of humanity as well as being the physical representation of it herself, she believes that death is true freedom for humans and pities those who think otherwise.

History
It is believed that Cartesia manifested along with or sometime after Mother Qualia; being the despair of humanity she opted Mother Qualia to create Angels and send them to destroy the humans of that time.

Relatives

 * Mother Qualia: Cartesia is the manifestation of despair infecting Mother Qualia. As Mother Qualia could be considered a system, Cartesia could be considered the virus infecting Mother Qualia.
 * Eve: Eve was created when Elcrest fractured Mother Qualia's main body; as a shard of the Mother that contains Cartesia's despair, she could be considered a daughter.
 * Marie: Marie manifested from a shard of Mother Qualia that broke off and fell to the Earth 1,000 years before the current story. She along with Eve could be considered daughters of Cartesia.
 * Sense Data: A mysterious character who is a God like Cartesia and possibly a sister.

Offshoots

 * The Black One: Black hands that Cartesia can summon at will.
 * Dummy Qualia E: The red qualia on her right side which attacks her enemies and can summon more Black Ones.
 * Dummy Qualia M: The blue qualia on her left side that is able to increase her turn-speed as well as heal her.

Abilities

 * Song: Cartesia chants and then releases a voiceless scream that damages everything in a wide range in front of her.
 * Pandemonium ("I shall grant you a pandemonium of death"): While releasing a powerful blast of energy, Cartesia summons hands made of chaos from the ground that damage any non-hovering enemy that treads across them.
 * Paint It Black ("Dark, more dark"): Cartesia crushes a head on her body, releasing a black smog that damages one enemy. This deals severe damage to any character suffering from negative status ailments.
 * Unveil ("Your time is over"): The biggest head on Cartesia's lower body opens its mouth and begins to draw in energy. After gathering enough, it will release a powerful beam that damages all enemies in front of her.

Trivia

 * Cartesia mentioned that those who are aware of her existence refer to her as such, she could be talking about Sense Data.
 * Cartesia's always has her eyes closed except when she is using "Unveil".
 * Before the cutscene that cuts her level, her health can't be reduced less than 1.