J'Ula is a Klingon matriarch of the House of Mo'Kai. She commands the I.K.S. Lukara. She is the sister of T'Kuvma.
- “Routine Maneuvers”: J'Ula's forces coerce Cyrano Jones into sending a false distress signal, allowing them to ambush the Tutorial Starship. She kidnaps Captain Anton Schaefer from the bridge, and kills him when he refuses to comply with her orders.
- “Trial by Fire”: The Lukara is driven off by the player and the U.S.S. Sebrova.
- “Secrets”: J'Ula leads an attack on the U.S.S. Glenn. She is able to escape with classified data regarding the spore drive from the vessel's engineering lab.
- “The Plausibility of the Possible”: J'Ula breaks Aakar out of Facility 2047.
- “Impossibility of Reason”: J'Ula's forces attempt to capture Captain Lorca and hunt his team on Priors 5D.
- “Downfall”: J'Ula is part of the attack on Starbase 1 and deploys a mycelial weapon during the battle, causing both her and the player to be transported to the 25th century.
- “Beneath the Skin”: J'Ula launches an attack against Kuumaarke and her research team in the Andoria System, she warps out of the system leaving a mycelial rift behind.
- “The Centre Cannot Hold”: J'Ula enters the Great Hall during her meeting with the Klingon High Council. She greets Martok, references Kagran and calls out J'mpok during her speech for stealing his position as Chancellor while Martok still lives. She rallies House Mo'Kai and Klingon Rebel forces in the battle against J'mpok, the player and other attendees after the meeting. Later, the player and their allies engage her flagship in the Ceron System and the Qu'Vat System.
- “The Khitomer Discord”: The player and Martok confront and fight J'Ula and Aakar at the lower levels of Khitomer, where Aakar retreats while J'Ula is captured. After J'Ula explains the situation and with the help of Adet'pa, they managed to get out of the lower levels back upstairs where they defeat Klingon forces led by Ja'rod, who were sent by J'mpok. J'Ula later rescues the player from being killed by a mycelial wave launched by J'mpok, and aids them in rescuing survivors while they head to the transporter room. She assists the player in protecting Adet'pa who was getting the transporter running before they could beam to their ships. In orbit, Captains Kagran, Va'Kel Shon and Koren warp in where J'mpok silences the player before they can explain the situation and dishonorably accuses them of betraying the Alliance and joining House Mo'Kai. Refusing to stand down with the player, J'Ula aids in disabling the flagships and their forces as instructed by Martok, while arguing with J'mpok during the ensuing battle. At the end of the mission, she informs the player to lie low and wait for Adet'pa's signal to take action when the time its right.
- "Fighting in a Burning House": Aboard the Lukara, J'Ula reflects on the death of her brother, T'Kuvma. She vows to use her position within the House Mo'Kai to gather the information needed to win the war against the Federation, and ensure that the other Great Houses are indebted to her and her House.
- "The Ascendant": J'Ula searches for remaining, hidden members of her house on Nimbus III.