The Last Raven is the main protagonist and player character of Armored Core: Last Raven. They are one of the few Ravens who survived the attack of the unmanned suicide weapons that occurred at the end of Armored Core: Nexus.
During the events of Armored Core: Last Raven, they participate in the 24-Hour War, where their allegiances depend on player choice. Their Operator during the conflict is the former director of Mirage's Information Department, Sheila Caldwell.
The last Raven's exploits is legendary in that they were unaugmented by the Human Plus project and in JackO's ending emerged victorious against the augmented Zinaida and Evangel. Both of which were Human Plus