Legate Lanius is the military leader of Caesar's Legion and the final boss of the main story of Fallout: New Vegas in three out of four endings. He resides at the Legates camp, located just beyond Hoover Dam, where the final battle takes place, and cannot be reached until the end of the game. Lanius is the Legion's most savage and bloodthirsty warrior of all, and even Caesar himself says he's only in it for the killing. If Caesar dies, Lanius becomes the new "Caesar" and the Legion becomes far more brutal under his leadership. If the Courier decides to side with the Legion, Legate Lanius will be the one who gives the player the order to attack Hoover Dam, and also the one who congratulates the player after the Legion has won the battle.