Literally translated rom Mando'a as "loyal dog", Gulvyr was branded with this cruel moniker by Vauzem pirates of the Kiast system. Meant as an insult in their culture, the nickname stuck with Gulvyr's vod’e as an acknowledgment of his notoriety, loyalty and a symbol of respect, becoming markedly an honorific as time passed. It is a mark of Gulvyr’s unflinching devotion to his aliit, the Vatali Empire, and especially his former matriarch, Luna. That same devotion makes him abrasive, and borderline hostile towards people he finds completely opposed to his principles or those of his aliit.

Gulvyr has experienced plenty in his long life and while he still lives his life just like a Mandalorian should, he feels the pressure of age. Despite his best efforts, he keeps falling behind his younger counterparts in combat. He is not as agile or as explosive as he used to be, but what he lacks in speed, strength, and accuracy he makes up for in patience, intelligence, and wisdom. Perhaps because of his age, he has learned the fortitude and restraint necessary to be a leader where he once had the eagerness and stubbornness to rush through every challenge.

Though he is more often seen as the gruff and disciplined soldier outside the Okami, people who see him on his homeworld of Kaerls or among his brothers would swear he had a different personality entirely. Gulvyr is a lover of community and family, he enjoys feasts and drinking contests, even fights among friends. He loves children, despite his, sometimes, serious exterior. These values have only expanded and enlarged with age as Gulvyr realized his own failings of not fathering any children. Some think feelings like these have made the once brutal warrior weaker, feebler and more prone to making mistakes. If anything he has strengthened his resolve, and he has become more dangerous when his pack is threatened. Though his demeanor has made him somewhat easier to influence with the right words.

Gulvyr's moral code stems from a heavily biased view of ancient Mandalorian justice . He disapproves of any unjust acts that would bring shame to the aliit, to the point of disciplining his own vod'e if they cross him or his views. He finds acts of unnecessary cruelty cowardly, not something a Mandalorian should strive for. This has led him often enough into many verbal or physical conflicts with those that do not see eye to eye with his views.

Gulvyr is an expert blade-handler and his knowledge of near-human anatomy is just as extensive. In conjunction, these two skills give him the aptitude to strike just the right spot to inconvenience, incapacitate, or kill, depending on the situation. While his mentality and patience have only grown with age, his physical prowess leaves much to be desired and often has him overextending with much more agile opponents.

Until his mid-twenties, Gulvyr lived in a very hostile society ravaged by oppression. Learning to fend for himself and living without knowing his past or his name, he came to believe in a very personal tenet — names hold power and once you kill an individual and take their name, that power becomes your own. When facing opponents he deems worthy, Gulvyr will endeavor to learn their names before engaging so that he may tattoo their name on his own skin should he manage a killing blow. While his beliefs have since changed, the tradition stayed and the obviously ritualistic approach to vandalizing one’s skin makes Gulvyr stand out even outside his armor. The practice is generally considered savage and uncivilized outside similar warrior cultures.