Rigel is a prominent character in the anime series 'Z/X: Zillions of Enemy X'. She is an enigmatic and powerful agent hailing from the Blue World, one of the five alternate worlds battling for survival. Rigel is known for her calm demeanor and strategic mind, often serving as a key ally to the protagonist, Azumi Kagamihara. Her role in the series is crucial as she provides guidance and support, helping to navigate the complex conflicts between the worlds. Rigel's loyalty and determination make her an indispensable member of the team.