When Shiro imprisoned in Cerberus, Ulaz helped him to escape year later and he uploaded Shiro's arm's the coordinates. When he met with Shiro and Team Voltron his speech was suspected, but Shiro trusted him because he helped him to escape. And when Team Voltron faced the new Robeast Ulaz sacrificed himself to destroy the beast, but before that he gave instructions to the Team Voltron could find his Staff Headquarters.
Ulaz maintains a quiet and collected demeanor even in the face of death. His years of training as a Blade has meant he is able to detach himself emotionally from high-stakes situations and conduct his bussiness with brutal efficiency. Despite this, he lacks the bloodthirstiness of most Galra, showing restraint in his fight with the Paladins after infiltrating the Castle of Lions.
Ulaz is a selfless and compassionate individual, sacrificing himself to save the Paladins when he believed that their contribution to the fight against Zarkon would be greater than his own. With Allura, who has shown him nothing but aggression and suspicion, he acts respectfully and reservedly, even when she has him pinned against the wall of the Castle.
Ulaz is a highly skilled espionage agent. He is proficient at infiltrating Galra bases, such as the one Shiro is held captive in as a gladiator. He is especially talented at harmonising with the people he's syping on, able to earn the trust of his peers to the degree that he's left alone with valuable assests (i.e. Shiro).
Ulaz can make clean getaways and infiltrate highly secure facilities, like the Castle of Lions, unseen. He fights conservatively using a hand-to-hand and sword combat, wasting no energy on unnecessary acrobatics. He prefers to keep his opponents at a distance, and if not, harness his size and strength to use them as projectiles (throwing Hunk at Lance and Keith incapacitated all three simultaneously). He tends to use the element of surprise to his advantage, dragging Pidhe behind her grappling hook, rather than letting go, and catching Keith's sword, rather than countering the blow.
Ulaz can also pilot Galra spacecraft. He uses this skill to pilot his ship into Haggar's RoBeast; a fearsome mech suit sent to destroy the Paladins, killing himself and injuring the robot.