Jet is the brother of Missile and Rocket, and a runner for Hougen and gets the task to find Gin, Akame and John. Jet takes Reika as hostage to make Gin surrender.
The brothers get a new task - to capture Weed. Rocket joins the pack as a spy, and when he sees the chance, he kidnaps Weed.
As the brothers are about to kill Weed, Jerome shows up and fights the brothers.
The pack interrupts the fight, but Weed spares them, and Rocket joins Weed, moved by his kindness.
Jet and Missile go back to Hougen, where they're killed because Rocket joined Weed.
In the manga, Jet, Missile and Rocket were not Hougen's minions but as guests. After having a feast of deer meat as presented by Hougen, he and his brothers were given a task - to capture Weed. On their way, they bumped onto the blind Great Dane, Ben and the old Saluki, Cross. Fortunately, the Borzoi Brothers did not harm them and went on with their duty. After Missile succeeded in snatching Weed off from his pack, the brothers were deciding what to do with the puppy when Jet tried to attack Weed but was stopped by Jerome who showed up just in time. The Borzoi Brothers fought Jerome until Weed's pack interrupted it that they ran away empty-handed. However, Rocket decided to join the Ohu Soldiers from realizing his true purpose from Saburō's words and left his brothers behind. Shortly after that, Jet and Missile returned to Hougen only to be killed by Hougen and his minions (Jet was killed by Hougen's minion, then Missile was killed by Hougen himself). In the final battle against Hougen, Jet and Missile appear as ghosts along with the other soldiers who died in battle. They both speak to Hougen after Smith.