Specialist Krog is a Na'kuhl agent.
- “The Core of the Matter”: Krog represents the Envoy at a conference with Chulak's forces in the 23rd Century. Her vessel, the N.V. Retribution, is consumed by the Doomsday Machine, which then crashes into the planet. Krog and her crew are able to escape in temporal escape pods.
- “The Undying”: Temporal Recruits discover a video detailing Krog's attempt to purchase thalaron triggers from Hassan the Undying. Mistaking Krog for a Reman, Hassan informs her that he has already sold the triggers to her "associates."
- “The Temporal Front”: Disguised as a Reman member of the wait staff at the Alliance Summit, Krog poisons Klingon Chancellor J'mpok and attempts to assassinate Federation President Okeg. Once defeated by the player, Krog reveals that she travelled to the summit from the Na'kuhl System of the 29th Century. The player then leaves Krog in the custody of Commander Tiaru Jarok.
- “Temporal Reckoning”: As a member of the Envoy's Temporal Liberation Front, Krog is killed in battle with the player.
- “The Measure of Morality (Part 1)”: As part of their trials of good vs evil, the Excalbians prepare a simulation of the battle at Procyon V. Player is forced to fight their way through the Annorax. Krog appears as a simulacrum, and attempts to prevent the player from reaching Noye.
- "Seek and Destroy": Krog orders one of her operatives, Tarnh, to attack civilian shipping lanes in the early 25th Century, with the primary objective being the assassination of a distant ancestor of Kal Dano, who is known to be aboard one of the cargo cruisers. Krog also orders Tarnh to sow terror among the Alliance by attacking shipping lanes while in pursuit of this individual. Serves as a prelude to “Red Alert: Na'kuhl”.