One of the main characters of the World Chalice Duel Monster storyline in Yu-Gi-Oh!. Ningirsu (Yu-Gi-Oh!) is her older brother. Her OCG name is in fact supposed to be Eve.
Variants
- Crowned By The World Chalice - Ib before she gained the power of the World Chalice
- Knightmare Corruptor Iblee - Ib after being possessed by the evil spirit Lee
- Galatea The Orcust Automaton - a Robotic version of Ib created by her grieving brother after she killed herself in an attempt to stop Lee
- Ib The World Chalice Justiciar - Ib after being revived by the power of the Guardragons.
- Lib The World Key Blademaster - Older Ib now wielding the World Key after Auram (Yu-Gi-Oh!) remade the world