Babylon

Babylon (often nicknamed Babi or Babby) is a character in the Infinite Dendrogram anime. She is the Type: Guardian Embryo belonging to the player Rook Holmes.

In appearance, she takes the form of a tall, red-haired succubus with bat wings, a devil's tail, and a curvaceous figure.

Her personality is warm, friendly, and approachable—she gets along easily with most people and acts as a caring, supportive figure (like a big sister) toward Rook, comforting him when needed.

Due to Rook being underage in real life, the game's child safety filters restrict her more stereotypical succubus behaviors (like anything overtly lewd), limiting her to things like giving excellent massages instead.

She appears as a supporting character, particularly in scenes involving Rook, such as group interactions and battles where her abilities (including charm skills and fusion techniques with tamed monsters) come into play. Voiced by Yūki Takada in Japanese and Dani Chambers in English.