D

"I wish you'd phrase that a bit more flatteringly. You could say that I'm malice incarnate, for example."

D is a high ranking god who reincarnated the her classmates and teacher into the other world upon their death at the beginning of the story. She was also in the classroom at the time but did not perish.

Appearance
D has the appearance of a beautiful second-year high school girl with waist-length straight black hair.

To Sariel, she appears as a girl one step short of being an adult with an expressionless face that makes one think of bottomless darkness.

Personality
D cares more for her own personal amusement than anything else, but she's described to speak in a voice devoid of emotions. She is a playful self-proclaimed "Ultimate evil god", and most of the time states that she does things simply for entertainment. She appears to enjoy watching and toying with Kumoko.

Synopsis
D is the one responsible for the students reincarnation into the other world; their souls' would have disintegrated if she had left them alone. She also gave each student a custom Skill according to her perception of them and reincarnated them into species that best matched the wavelength of their souls.

She created the System after Gyurie requested help because she felt it would be interesting.

Abilities

 * Created the System with advanced magecraft.
 * Appears as a vast field of darkness when perceived by Gyurie.
 * Although weaker than Meido in direct combat, she is skilled at evading detection.
 * Owns a wide variety of powerful and pointless magical artefacts