The Krall appear as a team in Unreal Tournament 3, where they are used by the Necris to kill civilians and slaughter Ronin forces. They now have a much more intimidating appearance and are led by Scythe. They wear a combination of skull shoulder gear made from other Krall, and leather/cloth gear to indicate rank within the pack.
Though wielding the same weaponry as other factions in the game, the Krall are known for their horrifying ferocity, preferring to kill with their claws and teeth rather than conventional tactics.
In UT3 a Krall tribe led by Scythe fight alongside the Necris. The Krall are the primary assault force that sacked and obliterate the Twin Souls Mining Colony in the beginning of UT3, causing Reaper to swear to take revenge on both them and Akasha. They are the main enemies that the players will face from Act II until approximately Act IV, when the player then begins to take on the Necris.