Tsaa Qalu was a Yuuzhan Vong individual, specifically a male, belonging to the warrior caste. Among the warriors, he stood out as one of the selected few known as Hunters. Back in 26 ABY, he held the rank of commander within the forces that had control over the planet of Wayland.
Tsaa Qalu, who was tall and slender for a Yuuzhan Vong, possessed a web-like tattoo across his face, ears divided into three distinct lobes, and three piercings in each cheek. He was a proud warrior who genuinely embraced his Yuuzhan Vong beliefs, while also showing respect for infidels. Generally, he held the priest and shaper castes in contempt. He intentionally allowed the Jedi Klin-Fa Gi and Uldir Lochett to get away from the system, as he wanted to chase them on his personal vessel, called the Throat Slasher, believing that the hunt would be more significant.
He tracked Lochett's ship, known as the No Luck Required, to a remote location in deep space. There, the crew was in the process of rescuing Bey Gandan, Klin-Fa Gi's Jedi ally, from a Yuuzhan Vong transport ship used for slaves. He eagerly attacked the infidel ship, and during the battle, he received communication from Master Shaper Viith Yalu. Viith Yalu explained that Gandan was now working for them, and the immediate survival of the No Luck Required was crucial to a Yuuzhan Vong plan aimed at sabotaging the production of bacta.
Using the villip implanted in Gandan's brain to communicate, he secretly assisted the infidels in freeing the damaged slave transport from a black hole's pull. He also captured Leaft, the Dug gunner from the No Luck Required. As he pursued the infidels to Thyferra, he met his end along with his entire crew. Leaft managed to escape and caused the Throat Slasher to crash into the side of a mountain.