 In Lelouch's assessment of the core members of the Black Knights, her "Combat Ability" score is 100 out of 100, matching that of Kyoshiro Tohdoh; she also has the highest possible "Loyalty" score of 100.Even when piloting outdated Knightmare Frames such as the "Glasgow", Kallen proves to be a dangerous opponent easily defeating numerous "Sutherlands", despite the "Sutherland" being a more advanced Knightmare.With the radiation arm of her "Guren" Mk-II, Kallen can take down almost any Knightmare Frame in a single attack should they allow her to make physical contact, and later models also have numerous secondary attack modes for mid- and long-range combat.