Rei Ayanami (Tentative Name) is a mysterious character appearing in the Neon Genesis Evangelion franchise, specifically referenced in supplementary materials. She is an alternate version or clone of Rei Ayanami, distinguished by her uncertain identity. Her existence explores themes of individuality, identity, and the ambiguous nature of human existence. Like the original Rei, she is calm, reserved, and emotionally complex, playing a crucial role in the overall narrative and impacting the main characters' development through her unique perspective and existence.