Spear of Longinus

The Lance of Longinus is an artifact of incredible power, the only non-Evangelion object truly capable of penetrating an A.T. Field. Evangelions can use weapons against Angels, but only because the Evas' own AT Fields have extended around them and nullified the Angel's AT Field. N2 Mines are capable of slightly penetrating some of the weaker Angel's AT Fields to cause minor damage, but cannot truly penetrate them. The Lance of Longinus, however, can completely penetrate the active, unneutralized AT Field of an Angel.

The exact origin of the Lance is shrouded in mystery, but ultimately it is not of Earth origin, instead having been created by the First Ancestral Race and sent along with the Seeds of Life, Adam and Lilith (the Lance paired with Lilith was lost in ancient times). Thus, the Lance is an extraterrestrial weapon of god-like power. The First Ancestral Race sent along Lances with Seeds of Life like Adam and Lilith, so that if ever a Seed went out of control and threatened their projects, they would have a means of controlling them.