Matariel
Matariel is possibly one of the weakest Angels to attack Tokyo-3, and also the first Angel to be attacked by Units 00, 01 and 02 simultaneously.  Matariel has only one means of attack being that of projecting extremely corrosive acid towards its opponents, however, this form of attack is slow and coupled with the Angel's limited agility makes for a pretty ineffective weapon.  Matariel also possesses an extremely weak AT field which is not even capable of standing up to a short volley of fire from an Eva's standard issue rifle.  These weaknesses serve only to hamper Matariel in combat and so the Angel relies chronically on its ability to stealthily approach opponents unnoticed, thus gaining the element of surprise giving the Angel the upper hand in combat.
This entity bore the title of the angel of rain. It was also reputed to be one of the "rulers of this world". In Evangelion, episode 11, Materiel is a giant spider-like being which attempts to penetrate NERV by melting its way in. It secretes an unbelievably acidic form of orange goo from its main eye. It takes the combined efforts of Shinji, Rei, and Asuka to destroy this angel with Asuka taking defense, Shinji the offense, and Rei performing backup.