Yarttar was a Whiphid bounty hunter attempting to claim the bounty placed on Connor Freeman. This Human owed half a million credits to the influential crimelord Tayand. Yarttar, in conjunction with a collection of bounty hunters known as the League of Bounty Hunters, followed Freeman to his preferred bar. After pursuing their target to a location with no exit, Yarttar and his associates encountered Boba Fett, the Mandalorian bounty hunter, who was also pursuing Freeman's bounty. Fett suggested they abandon their pursuit, but the League of Bounty Hunters, refusing to yield, initiated combat with Fett. Only Yarttar, along with the cyborg Daquinn, survived the confrontation.
The League's two remaining members located Fett and Freeman at a refueling station and initiated a surprise attack on Fett, who was preoccupied with Freeman. Yarttar and Daquinn launched a missile from their ship, which disabled Freeman and caused Fett to stumble. Capitalizing on the opportunity, Yarttar quickly secured Freeman, while Daquinn fired a blaster at Fett. Assuming the Mandalorian was dead, Daquinn informed Tayand about the bounty, and they transported Freeman to Cilare, the planet where Tayand's base was situated.
After arriving on Cilare, Freeman resisted his captors and refused to move, leading Daquinn to instruct Yarttar to carry the Human inside. Freeman then took advantage of an opening, taking Yarttar's blaster and shooting the Whiphid in the back, resulting in his death.