Sahaqiel
Sahaqiel differs massively from the other Angels in that the Angel's one and only weapon is in fact its self.  Sahaqiel is effectively a huge living bomb capable of dropping small amounts of its self, from the Angel's orbital position outside the enemy's firing range, on to targets below with devastating consequences.  Though this may seem like an odd, yet extremely effective, way of dispatching of the Angel's opponents, Sahaqiel actually uses this unique ability to gain an absolute lock on its target, after which Sahaqiel descends on to its target thus eliminating not only its self, but also its target, along with a sizeable portion of the surrounding area!  Sahaqiel has the potential to be truly devastating, which is why Sahaqiel's AT field is reasonably strong thus preventing the possibility of taking out the Angel at long range before delivery of its apocalyptic payload.
Bears the name of the angelic ruler of the sky. This angel was a single eyed monster that orbited the Earth for the purposes of planetary bombardment. Once it gets its targeting right, Sahaqiel begins to fall toward Earth with the plan of detonating itself where it can do the most damage to NERV. However, by utilizing their AT fields, Shinji and the others are able to stop and defeat Sahaqiel's plan for mass destruction.