Allusions
Evangelion is filled with allusions to biological, military, religious, and psychological concepts, as well as numerous references or homages to older anime series (for example, the basic plot is seen in earlier anime like Space Battleship Yamato)—a tendency which inspired the nickname for the series, the "remixed anime". Anno's use of Freudian jargon and psychoanalytical theory as well as his allusions to religion and biology are often idiosyncratically used and redefined to carry his message. This tendency of Anno's has been criticized as "Total plagiarism!" and "just more mindgames from the animation crew". However, Anno has defended himself by denying the possibility of really original work without borrowing in anime:
"There is no longer room for absolute originality in the field of anime, especially given that our generation was brought up on mass-produced anime. All stories and techniques inevitably bring with them a sense of déjà vu. The only avenue of expression left open to us is to produce a collage-like effect based on a sampling of existing works."
"The people who make anime and the people who watch it always want the same things. The creators have been making the same story for about 10 years; the viewers seem to be satisfied and there's no sense of urgency. There's no future in that."
Regardless, Anno seems to have hoped to reinvigorate the medium of anime—seen as lifeless and moribund in the early 1990s—and restore originality: to create a new anime. This desire is also the reason Anno cited for creating the Rebuild of Evangelion movies:
"Many different desires are motivating us to create the new "Evangelion" film… The desire to fight the continuing trend of stagnation in anime.
The desire to support the strength of heart that exists in the world…
Many times we wondered, "It's a title that's more than 10 years old. Why now?"
"Eva is too old", we felt.
However, over the past 12 years, there has been no anime newer than Eva.
The interpretation of the symbols and concepts varies from individual to individual, and it is not clear how many are intentional or meaningful, nor which were merely design elements or coincidences. Anno himself said, "It might be fun if someone with free time could research them." A number of these symbols were noted on the English DVD commentary for Death and Rebirth and End of Evangelion.
Many of the characters share their names with Japanese warships from World War II (such as the Sōryū, Akagi, and Katsuragi; though the ship names and character names are written with different kanji, they share the same pronunciations.) Other characters' names refer to other works of fiction, such as the two characters named after the protagonists of Ryu Murakami's Ai to Genso no Fascism ("Fascism in Love and Fantasy"; the two main characters are named Aida Kensuke and Suzuhara Toji; Anno later directed a Murakami adaptation, Love & Pop).
Other fiction allusions Philip K. Dick's The Divine Invasion, and "The Prisoner, Thunderbirds, Ultra Seven, UFO, The Andromeda Strain, even The Hitcher."
Read more about this topic: Neon Genesis Evangelion (anime)