When Lelouch takes the U.F.N. leaders hostage, Kallen insists that she'll take Lelouch down personally, as she possesses the only Knightmare capable of fighting Suzaku's "Lancelot Albion". However, Xingke orders her not to fight, fearing for the safety of the hostages. After the Black Knights side with Schneizel, Kallen is stationed in the front lines. She breaks away from the main line to try to reach Lelouch, but is called back. Kallen breaks into the "Avalon" and attempts to kill Lelouch, with tears in her eyes as she does so, but is stopped by C.C. Kallen defeats C.C. and, with the help of Gino, proceeds to the "Damocles" for a final confrontation with Suzaku.