Ishtar is the Babylonian goddess of love and fertility, the Babylonian equivalent of the Sumerian goddess Inana. She is the personification of the planet Venus. Her father is uncertain, sometimes claimed to be the daughter of Nanna, the moon god, or Anu, the sky god. She is also known as the "Lady of Battles" because she is known as a very violent deity. She is the creator and guardian of life. Her symbol is the eight-pointed star, and her holy city is Uruk (or Erech). Uruk is a town of sacred courtesans - part of her cult was devoted to prostitution.
Ishtar's sister is Ereshkigal, the goddess of the realm of the underworld. Ereshkihgal cursed her sister, and Ishtar died. With Ishtar dead, the earth withered and would not produce, and neither animals nor human beings would bear young. With great effort, the water god Ea used magic to revive Ishtar, and Ereshkigal was not pleased. She demanded to trade her sister for someone else, finally deciding that her husband Tammuz would replace Ishtar for six months out of the year.
Ishtar is the ruler of Binah. By bringing Astaroth to throne room in Binah, the player may seperate him into Ishtar and Majin Ashtar. Ishtar explains that YHVH forced her to fuse with Ashtar and become Astaroth long ago. This allows the player to create Ishtar with fusion afterwards.
"The Akkadian goddess of love and war. She is known as the "Queen of Heaven" and is equated with the planet Venus. In the epic of Gilgamesh, she had many lovers, but all were fated to be killed or turned into animals at her hands."
Ishtar takes the form of Trisha (an anagram of her name), also known as the Midnight Venus (ミッドナイトヴィーナス, Middonaito Vīnasu) in the Japanese version. She is an attractive woman with a red afro who is the hostess of the various modes, including the Golden Playhouse (Golden Theater in Japan), the game's primary story mode. She provides an introduction to the game's modes and will text Vincent concerning his achievements in the Nightmare stages and provide him with hints. She also acts as commentary throughout the game. Players can make her reveal her identity and her role in the story if they do well enough, and completing the game's toughest challenge, the Axis Mundi of Babel, produces a cutscene where she breaks the fourth wall. In Catherine, Trisha also uses the god Astaroth as her avatar while Vincent is in the confessional booth in between rounds of the Nightmare stages.