The crowning achievement of K'Thonn fighter production and construction, the Kalarh is a sturdy if large heavy fighter. Due to a quirk related to its air-foil system, the Kalarh is much easier to hit and less maneuverable than was originally planned. Armed with a single compact version of the particle burst (rather than two particle stingers), the Kalarh is able to pierce even the heaviest ships armor. The Kalarh is especially impressive when used in a wave assault format.

During the K'Thonn Rebellion it was the Kalarh fighters that offered the highest success rates against the more heavily armored Bintari ships. Coupled with a lack of a fighter defense--either in their own fighters or true anti-fighter weaponry--the Bintari were forced to use missiles to combat them, a method that was not overly successful.