Spear of Cassius

The Spear of Cassius is a weapon first seen in Evangelion: 2.0 You Can (Not) Advance, wielded by Evangelion Mark.06 to stop Third Impact.

Story
Originally known only as a "spear" (槍, yari), it possesses a double-helical shaft and a defined spearhead implanted with a green gem and it is first seen at the lunar Tabgha Base in a shroud. During Near Third Impact, it is used by Evangelion Mark.06 to terminate the event and Unit-01's evolution into an energy being.

The Spear is colored red in Evangelion 2.0/2.22 and promotional materials for the film; however, in a promotional illustration for Evangelion 3.0, along with an Mark.06 action figure, it is colored black or dark gray instead. The reason for this discrepancy is currently unknown.

In Evangelion: 3.0 Kaworu and Shinji head down into Terminal Dogma to retrieve the Spear of Cassius along with the Spear of Longinus from Lilith's corpse. Kaworu implies that both spears in unison could rebuild the world. However, what they found were two Spears of Longinus and no Spear of Cassius.

In Evangelion: 3.0+1.0 Thrice Upon A Time, the Spear of Cassius is described as "The Spear of Hope" and is wielded by Unit-01 against Evangelion 13 using the Spear of Longinus. Spear of Cassius itself was transmogrified by Shinji, who piloted Unit-01, out of one of two Spears of Longinus he took from latter Eva which under Gendo's control.

Trivia

 * The ANIMA Continuity features a similar Spear to take an Evangelion out of an energy state, or bisect energy beings called the Spear of Lucretius though it is used by Shinji and Super Evangelion rather than against him and has an appearance more similar to some specific art book interpretations of the original Spear of Longinus
 * In the apocryphal Christian Gospel of Nicodemus, Longinus was named as the Roman soldier who speared Jesus Christ with what became the legendary Spear of Longinus. The Spear of Cassius (and spear of Gaius) takes its name from a Roman senator and general known for his involvement in the assassination of Julius Caesar with a similar name Gaius Cassius Longinus.