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Ritsuko Akagi from *Neon Genesis Evangelion* perfectly embodies the ISTJ (Logistician) MBTI type. ISTJs are logical, pragmatic, and highly responsible—qualities Ritsuko exemplifies as NERV’s chief scientist, overseeing the development and maintenance of the Eva systems and serving as the organization’s practical backbone. Her decisions are grounded in facts and data rather than emotions, reflecting the ISTJ’s dominant Introverted Sensing (Si) function that values past experience and established truths. As a key figure in Eva development, she supports pilots like Shinji and Asuka with her intelligence and technical expertise. Yet, Ritsuko’s appeal goes beyond her role as a brilliant scientist. The complexity often seen in ISTJs emerges through her conflicted feelings toward Gendo Ikari, the legacy of her mother, Dr. Naoko Akagi, and her scientific ethics. Unlike the more openly emotional Misato Katsuragi, Ritsuko maintains a cool, professional demeanor