In the anime/manga franchise Neon Genesis Evangelion ,evangelions, or simply EVAS ,are mecha piloted by Children chosen by Nerv. The Evas were created to defend Tokyo-3 from the threat of angels. The Evangeliosns were designed by Ikuto Yamashita and series director Hideaki Anno.
Naming system
Unit 00 uses the name "Zerogoki" which means "Zero number machine" and is the only Eva that doesn't use the basic naming system. for instants Unit 01 is named "Shogoki" which means "First number machine" and unit 02 is "Nigoki" which is "second number machine" and ETC.
Test type/prototype
Evangelion Unit 00 (Zerogoki)
The first successful prototype ,piloted by the first Child Rei Ayanami. It originally had orange armor but it was damaged beyond repair by the angel Ramiel and was replaced by blue armor.
note
"zerogoki" does not follow the same naming system as succeeding Evangelions. It's real name should be "Reigoki" meaning both pilot and mecha have the same name.
Evangelion unit 01 (Shogoki)
Probably the most famous of the evas and piloted by Shinji Ikari (With Rei ayanami or a dummy plug as a backup). It's soul resident is Yui Ikari (Shinji's mother) and is the only eva to be born by Lilith. It is also known as the "Test Type". Unit 01 killed Zeruel and absorbed his S2 engine. Unit 01 was given a special a special weapon ,a katana by the name of the Magorok E Sword, and armor known as F-type armor ,full type armor, in the game super robot wars alpha. The Magorok E Sword and F-type armor was later made into toys.
Production models
Evangelion unit 02 (Nigoki)
Eva unit 02 ,built by NERV's Germany branch ,is the first production model. Piloted by Asuka Langly soryu. It's residential spirit is Kyoko zeppelin soryu (Asuka's mother). It is red and has four eyes. It's head armor has two movable sections. One covering the jaw and around the lower eyes and the second just above the upper pair of eyes.
Evangelion unit 03 (Sangoki)
The fourth evangelion piloted by Toji Suzuhara. Unit 03 and unit 04 are sister models since the only real difference is in their colors ,unit 03 being black and unit 04 silver. The residential soul of Sangoki is unknown but could be Toji's dead mother. Unit 03 was infected with the angel Bardiel and defeated both Rei and Asuka. Shinji refused to fight and NERV was forced to use the dummy plug. Unit 01 defeated Bardiel but Toji lost an arm in a leg ,but dies in the manga.
Evagelion unit 04 (Yongoki)
The sister model to unit 03. The evangelion was destroyed while still in production due to it's S2 engine ,which turned the matter around it into energy. It's design is exactly like unit 03 ,save for the color which is silver. In evangelion battle orchestra it was piloted by Kensuke Aida.
evangelion unit 05 (girlfriend of steel 2)
In the manga and game Girlfriend of steel 2 unit 05 is an evangelion added to NERV's arsenal. In the game it was piloted by Kawuro Nagisa and in the mang Kensuka Aida was the designated pilot ,unfortunately for him Kawuro took his place and Kensuke never actually piloted it. This version of unit 05 is no different than the Mass production Evas ,except the dummy plug is replaced by the standard issue entry plug.
Evangelion unit 05 (Gogoki) (Rebuild)
In the original series unit 05 was scrapped to make way for the mass production evas. In the movie Rebuild of Evangelion Unit 05 is a black evangelion with orange detail. It has large lance like arms. It's residential soul is unknown nor is it's pilot ,but it could be the new Character Mari.
evangelion unit 06 (Rokugoki) (rebuild)
In the original series unit 06 was scrapped with unit 05 to make way for the mass production evangelions ,but in the movie series (Rebuild of evangelion) "it descended from the moon with it's pilot" ,possibly Kawuro Nagisa. It is a dark colored evangelion with a single visor and aerial capabilities. It's residential soul is unknown.
Mass Production (MP) Evangelion unit 06-13 (Ryousenki)
Battle orchestra
The Game "Evangelion Battle Orchestra" is an arcade style fighting game released for the PS2 on June 28 ,2007. The game featured many familiar evangelions , angels ,even Gunbuster ,and introduced two new Evas.
Evangelion unit Alpha (Kougoki)
One of the evangelions introduced in battle orchestra. It is a green eva with guns mounted on it's shoulder. It's pilot and residential soul is unknown.
evangelion unit Beta (Otsugata)
An evangelion introduced in Battle orchestra. It is a golden evangelion with wings and a katana. It's pilot is Kawuro Nagisa. It's residential soul is unknown.
other Mecha in evangelion
Besides the evangelions there are various other mecha that appear in the series.
Jet alone
Jet alone is an unpiloted mecha that appeared in episode 7 of Neon Genesis Evangelion. Jet alone was created by Japan Heavy Chemical Industries to replace the Evangelion series. Jet Alone is nuclear powered with it's own reactor within it. Jet alone was sabotaged by gendo and ran rampart. It became a walking nuclear meltdown. When the radio command ,HOPE, didn't work ;Misato entered it manually. In the end the password failed and the fuel rods deactivated at the last minute ;meaning that it wasn't supposed to meltdown only end the Jet Alone project.
naming
Jet alone's name comes from Jet jaguar ,godzilla's robotic partner from Godzilla vs. Megalon. Jet jaguar's original name was Red Alone. Gainex simply to the first half of the final name and added the last part of the original name.
Trident land cruiser
A vaguely dinosaur like mecha introduced in Girlfriend of steel. It's pilots are Musashi Lee strasberg ,Keita asari ,and Mana kirishima. Like Jet Alone it was created to replace the evangelions.