For the version of "Fly Me To The Moon" used in the final episode, director Hideaki Anno reportedly asked singer Megumi Hayashibara (who also voices Rei Ayanami, Yui Ikari, and Pen-Pen in the show) to perform the song while imagining herself "strangling a little cat with a big smile on [her] face."
In 1998 GAINAX Company was audited by the National Tax Agency for concealing revenue from various Evangelion properties. In their findings, it was discovered GAINAX had concealed 1.56 billion yen worth of income (thereby failing to pay 560 million yen due in corporate taxes) which it had earned between the release of Evangelion and July 1997. Eventually then GAINAX president Takeshi Sawamura and studio tax accountant Yoshikatsu Iwasaki were arrested on 13 July 1999 for tax fraud.
Many of the characters were named after various WWII-era Japanese naval vessels. Katsuragi, Akagi, and Soryu were all aircraft carriers; the Akagi led the attack on Pearl Harbor. Ayanami and Fuyutsuki were destroyers; Fuyutsuki rescued survivors from the great Yamato when she was sunk near Okinawa in 1945. Kirishima and Hyuga were battleships that were part of the fleet which attacked Pearl Harbor. Ibuki and Aoba are names of heavy cruisers; the Ibuki existed only on paper, it was never built.
According to production sketches, the members of the SEELE Human Instrumentality Project Committee, most of whom are unnamed but distinguished from each other by the colors they are shaded in, represent five major countries of the world. Member A (green) is from the United States, Member B (yellow) hails from France, Member C (red) represents the United Kingdom, Member D (blue) is from Russia, and Keel Lorenz (full color) comes from Germany.
In Gendo Ikari's office in NERV, the large symbol visible on the floor and ceiling are the Tree of Life of Qabbalistic tradition, which contains the Sephiroth, or ten spheres of life. Gendo has his desk positioned directly on top of/below the Sphere of Kether, which represents Infinite Light and Wisdom, Supreme Consciousness, and God.
NERV's motto of sorts, "God's in His heaven; all's right with the world," comes from a poem by Robert Browning called "The Year's at the Spring". The full text: "The year's at the spring,/ And day's at the morn;/ Morning's at seven;/ The hill-side's dew-pearled;/ The lark's on the wing;/ The snail's on the thorn; /God's in His Heaven-/ All's right with the world!"
The series is heavy with religious symbols and motifs leading to a lot of speculation of the supposed symbolism. However Assistant Director Kazuya Tsurumaki claimed the religious symbols were chosen simply because they looked interesting while creator and director Hideaki Anno has never commented on the matter.
The ending theme song is "Fly Me to the Moon". Approximately 56 different versions of the song were produced for the show. Some of these contain vocals, are karaoke versions, or are instrumentals. Others are short-length mixes or "TV-size" versions of previous recordings that were designed to be played at the end of the show, and a few versions of the song are not even called "Fly Me to the Moon" at all. To date, most of these recordings can be found in Original Soundtracks I, II, and III as well as the CDs "Addition," "Birthday of Rei Ayanami," "Refrain of Evangelion," "Death & Rebirth," and the 7-disc "S2 Works" collection. However, several of the TV-size versions that appear during the show's closing credits are not available on any official Evangelion CDs to date.
The story for "Evangelion" came from Yoshiyuki Tomino's series "Space Runaway Ideon". Anno has gone on record saying that Tomino-sensei and his stories (such as "Mobile Suit Gundam") were his biggest inspirations.
In episode 16 (Sickness, Unto Death, And.../Splitting of the Breast), Shinji and the EVA-01 are absorbed into a "Sea of Dirac". This comes from a theory by physicist Paul Dirac which states that the entire universe is filled with densely packed, negative energy electrons (in other words, anti-matter). This became known as a Dirac Sea, though later studies by other physicists gave way to the similar, but slightly more accurate Stückelberg-Feynman theory.
In the original Japanese, the Angels are referred to as "shito", which can be translated as "disciple" or "apostle". The actual Japanese word is "tenshi". Occasionally, English text would be used in the series, and the Angels were referred to as angels in print.
The three MAGI Supercomputers, Melchior, Balthasar and Casper (Gaspar) are the names of the three wise men (also known as "magi") who, according to Christian legend, followed the guiding star to Bethlehem in order to give praise and gifts to the newborn Christ.
The version of Episode 16 ("Splitting of the Breast") that is contained on the Renewal (Japan) and Platinum (overseas) rereleases is not the original print. The older 16mm negative had somehow become lost from the development lab archives; therefore, a 35mm internegative was used for this recent edition. Color correction and digital remastering were also utilized to simulate the original. However, there is a noticeable discrepancy in color saturation and artifact cleanup compared to other episodes in this release.
In the preview for the "TV version" of episode 22 (broadcast before the "director's cut" was produced), subliminal messages written in multicolored text on a white background are rapidly flashed on the screen. These were actually not used in the TV version and were relegated to the extended "mental attack" scenes added for the DC version. Interestingly, the preview for the DC version features subliminal text written in white over a black background, which appeared in both versions.
Animax Latin America was in charge of dubbing Evangelion Director's Cut this dubbing was made in Argentina in 2007, Based in the original dubbing done in Mexico in 2000. From the Original Mexican version Voice cast, only were called the actors Víctor Ugarte as Shinji Ikari and 'Humberto Solórzano' as Gendo Ikari.
Originally, Hideaki Anno tried to get Kunihiko Ikuhara to join the project. Kunihiko Ikuhara later stated that he believed the bathroom scene between Shinji and Kaworu was inspired by a similar meeting between him and Hideaki Anno.
In Episode 7, Misato's cans of Yebisu beer are labelled "Yebichu", with a picture of a hamster replacing the "beer god". This is a reference to the manga "Oruchuban Ebichu" by Lisa Itoh, which Hideaki Anno was a fan of. When Gainax later produced the anime version, Oruchuban Ebichu (1999), they carried the joke over.
The trivia item below may give away important plot points.
Series creator Hideaki Anno claims he was mainly influenced by the show Space Runaway Ideon (1980). Both hold parallel stories (the trials/tribulations of a squad fighting a seemingly endless war, with everyone dying in an apocalyptic finale), and both have ended the same way: with two theatrical films, the first a recap made of clips from the TV series, and the second an apocalyptic tale (right down to a conclusion of hopeful rebirth).