The Balyeg was a large reptilian creature that preyed on the pardlam. Bounty hunter Jango Fett considered it one of the scariest creatures in the galaxy. Hoping to teach his son Boba not to fear, Fett took him to the Balyeg's planet and ordered him to get the creature's tooth. Boba was successful in this task.
The Balyeg lived in a large cave and preyed on the pardlam, which were the only creatures large enough to satisfy the Balyeg's hunger. The Balyeg located the pardlam by a special smell that they emanated.
In 22 BBY, the Balyeg's planet of residence was visited by the bounty hunter Jango Fett and his son, Boba. Hoping to show his son the most frightening creature in the galaxy so he would never fear again, Jango took Boba to the Balyeg's cave. Spraying him with the pardlam's smell, Jango gave Boba his jetpack and told him to bring the Balyeg's tooth to him. The Balyeg attacked Boba, but the latter was able to maneuver on the jetpack and take the creature's tooth, bringing it back to Jango.
During the Yuuzhan Vong War, the Breath of the Balyeg was a pirate ship.
The Balyeg appeared in Blood Ties: A Tale of Jango and Boba Fett 1.