Barton IV was a frozen and barren planet covered in snow. Its terrain was mountainous and included caves. Avalanches were known to occur. Black ice vultures patrolled the skies in search of food and at least one ice wyrm wandered underground near an Imperial supply depot, kept at bay only by high-frequency sensor beacons.
In 19 BBY, after the Proclamation of the New Order, Clone Commander Mayday and a squad of at least eleven clone troopers which included Hexx and Veetch were sent by the Galactic Empire to guard a supply depot located on the planet. Over time equipment such as the sensor beacons degraded due to the conditions of the planet leading to multiple raids by local raiders from a hideout close to the depot. This caused Mayday to request the Empire for reinforcements however his request was denied. By 18 BBY, due to a lack of reinforcements, the depot was unguarded with only Mayday, Hexx, and Veetch remaining from the previous twelve clone troopers that were sent to guard the depot.
Around 18 BBY, Lieutenant Nolan, CT-9904 "Crosshair," and three clone troopers arrived at the depot in a Nu-class transport shuttle to secure the cargo at the depot until week's end where it would be transferred offworld. Having to fight off local raiders who killed both Hexx and Veetch, Crosshair and Mayday made a last-ditch effort to eliminate their enemy, in which Mayday was mortally wounded. Helping the dying clone back to the depot, Crosshair begged Nolan to help him, but the officer dismissed Mayday as an expendable asset. As Mayday died, Crosshair decided to shoot Nolan, killing him. He would be arrested for treason and imprisoned.
After Crosshair later escaped Imperial prison with the help of Omega, the two would be reunited with Clone Force 99. The squad would visit Barton IV to access the Imperial terminal there and decrypt an Imperial datapad. Accessing the depot, they would divert power away from the sensor beacons, leading to an encounter with a wyrm. They had to undergo a risky operation to lure the beast outside the perimeter and reactivate the beacons before they were able to depart the planet.
The planet first appeared in "The Outpost," the twelfth episode of the second season of Star Wars: The Bad Batch. It was released on March 8, 2023 on Disney+.
- Star Wars: Dawn of Rebellion: The Visual Guide