Hideaki Anno in the context of The End of Evangelion

Neon Genesis Evangelion (Japanese: 新世紀エヴァンゲリオン, Hepburn: Shinseiki Evangerion; lit. 'New Century Evangelion' in Japanese and lit. 'New Beginning Gospel' in Greek), also known as simply Evangelion or Eva, is a Japanese anime television series produced by Gainax and Tatsunoko Production, and directed by Hideaki Anno. It was broadcast on TV Tokyo and its affiliates from October 1995 to March 1996. The story, set in 2015, fifteen years after a worldwide cataclysm in the futuristic fortified city of Tokyo-3, follows Shinji Ikari, a teenage boy who is recruited by his father Gendo Ikari to the mysterious organization Nerv. Shinji is tasked to pilot an Evangelion, a giant biomechanical mecha, to fight and destroy beings known as Angels.

The series has been described as a deconstruction of the mecha genre; it delves into the experiences, emotions, and mental health of the Evangelion pilots and Nerv members as they are called upon to understand the ultimate cause of events and the motives behind human action. The series features archetypal imagery derived from Shinto cosmology and mystical Judeo-Christian religions and traditions, including Midrashic tales and Kabbalah. The psychoanalytic accounts of human behavior put forward by Sigmund Freud and Carl Jung are also prominently featured.

Gainax Co., Ltd. (株式会社ガイナックス, Kabushiki-gaisha Gainakkusu; stylized in all caps) was a Japanese animation studio based in Musashino, Tokyo. It is famous for its original anime series such as Neon Genesis Evangelion, Royal Space Force: The Wings of Honnêamise, Gunbuster, Nadia: The Secret of Blue Water, FLCL, Magical Shopping Arcade Abenobashi, Gurren Lagann, and Panty & Stocking with Garterbelt, which have garnered critical acclaim and commercial success. Evangelion has reportedly grossed over ¥150 billion, or approximately US$1.2 billion. In a discussion at the 2006 Tekkoshocon, Matt Greenfield claimed that Evangelion had grossed over US$2 billion; Takeda reiterated in 2002 that "It sold record numbers of laserdiscs in Japan, and the DVD is still selling well today", as well as for their association with award-winning anime director and studio co-founder Hideaki Anno. The company was headquartered in Koganei, Tokyo.

From its inception, Gainax worked on stories created in-house, such as Nadia and Evangelion, but also adapted existing manga like Kare Kano, Medaka Box and Mahoromatic. Original series produced by Gainax are often known for their controversial twist endings. The Animage Anime Grand Prix was awarded to Gainax for Nadia: The Secret of Blue Water in 1991, Neon Genesis Evangelion in 1995 and 1996, and The End of Evangelion in 1997.

Shinji Ikari (Japanese: 碇 シンジ, Hepburn: Ikari Shinji; IPA: [iꜜkaɾʲi ɕiɲꜜdʑi]) is a fictional character and the main protagonist of the Neon Genesis Evangelion franchise, created by Gainax. In the original anime series, Shinji is a boy abandoned by his estranged father, Gendo, after the mysterious death of Shinji's mother, Yui. Years later, Gendo asks him to pilot a mecha called Evangelion Unit-01 to protect the city of Tokyo-3 from Angels, creatures that threaten to destroy humanity. Shinji appears in the franchise's feature films and related media, video games, the manga Petit Eva: Evangelion@School, the Rebuild of Evangelion films, and the manga adaptation by Yoshiyuki Sadamoto.

Director Hideaki Anno conceived Shinji as a representation of himself, reflecting his four-year depression after the airing of his previous work, Nadia: The Secret of Blue Water. Shinji's insecurity and torment are explored through streams of consciousness and inner monologues, with episodes focusing on his introspection. Anno used psychoanalytical theories for his characterization, including the Freudian psychosexual development model. His design was created by Sadamoto. Shinji is voiced by Megumi Ogata in Japanese and by Spike Spencer and Casey Mongillo in English.

Gendo Ikari (Japanese: 碇 ゲンドウ, Hepburn: Ikari Gendō) is a fictional character from the Neon Genesis Evangelion franchise, created by Gainax. In the original anime series with the same name, Gendo is the supreme commander of the special agency Nerv, which is dedicated to the study and annihilation of Angels, a series of mysterious enemies of humans. Gendo is grief-stricken by the sudden death of his wife Yui, and abandons his son Shinji Ikari to devote himself to a plan named Human Instrumentality Project. Years later, Gendo asks Shinji to pilot a giant mecha named Evangelion; his pragmatic, cold, and calculating attitude leads him to use any means to achieve his personal goals. He also appears in the franchise's animated feature films and related media, video games, the original net animation Petit Eva: Evangelion@School, the Rebuild of Evangelion films, and the manga adaptation by Yoshiyuki Sadamoto.

The character, who was originally conceived as a modern version of Victor Frankenstein, is inspired by the personal experiences of the series' production staff, reflecting the absent, emotionally detached Japanese father figure. Neon Genesis Evangelion director Hideaki Anno's abusive father particularly influenced Gendo; the director also took inspiration from psychoanalytic concepts, especially the Freudian Oedipus complex, for his development.

The Evangelions (エヴァンゲリオン, Evangerion), also referred to as Evas, are fictional biomechanical humanoid mechas introduced in the anime television series Neon Genesis Evangelion, produced by Gainax and directed by Hideaki Anno and in the manga of the same name written and illustrated by Yoshiyuki Sadamoto. In addition to the original animated series, Evangelions appear in its derivative works, including spin-off manga, video games, visual novels, the original video animation Petit Eva: Evangelion@School, and in the Rebuild of Evangelion movies, with considerably different roles and guises.

In the original animated series, the Evangelions are giant humanoids, which the research center Gehirn and the special agency Nerv research to fight beings called Angels. They have mechanical components and a basic organic structure derived from Adam and Lilith; for this reason, they have eyes, epidermis, internal organs, and nails similar to those of humans and have been classified as cyborgs rather than mecha in the traditional sense. Those assigned to pilot an Evangelion are called Children and are selected by an organization called the Marduk Institute. Their designs, inspired by the oni of Japanese folklore, Ultraman, Iczer-One, Devilman, and other sources, caused problems during the production of the animated series but have received a positive reception from critics and audiences and have been used for merchandise.

The Angels (使徒, shito; lit. 'apostles') are fictional entities from the anime television series Neon Genesis Evangelion, which was produced by Gainax studio and directed by Hideaki Anno. The Angels also appear in the manga adaptation of the same name, which was illustrated by Yoshiyuki Sadamoto.

In the original animated work, almost all of the Angels are antagonists of mankind who repeatedly try to reach the headquarters of the special agency Nerv in the city of Tokyo-3. Most of the Angels originate from an entity called Adam, but the eighteenth specimen, humanity, is descended from Lilith, the second Angel. To counter the Angels' invasion, Nerv builds the Evangelions, mechas that possess a force field called an AT Field, which the Angels also use to defend themselves.