Jaro doesn't like to work in groups or teams and feels most comfortable on his own. Jaro sticks to himself, sets his own pace, and doesn't share feelings or emotions with others. While the Lone Wolf can get things done quietly and efficiently, he tends to be emotionally cut off and has problems relating to his comrades.

While Jaro will see a job through to its conclusion and put forward his best effort, it’s still just a job. Jaro's true loyalties lie to his friends, and through thick and thin,he will stand by them and die for them if needed. This loyalty is reserved for those who have earned Jaro's trust, putting him at odds with other Mercenaries that are only doing a job for the money. This also makes it harder for employers to trust his motives, often times creating extra competition and difficulty finding work. None of it matters to Jaro, though, because loyalty to his friends is not something credits can buy.

Jaro has a military background, and draws upon his experience to tackle the obstacles in his life. This makes him decisive, efficient, and fearless; provides him with a strong sense of duty and strength; which tends to influence his ability to fight and lead. However, a rigid mind is less compassionate towards individuals and less imaginative, and Jaro sometimes risks appearing callous, relatable, or incapable of compromising.

While generally laid back and more than happy to offer a quip of sarcasm, Jaro's entire demeanor changes once combat begins. He becomes focused and quiet, with his smile replaced with a look of grim determination.

Even the most gifted of weapon masters understands the importance of physical fitness and disciplining the body with through martial arts training. Jaro has trained vigorously in unarmed combat by fusing Teräs Käsi and Echani with other unconventional forms. While this martial focus helps bolster his prowess in close-quarters combat, Jaro is still limited in scope when facing down a less direct or ranged threat.

Jaro doesn't like to kill people; instead he chooses to injure his opponent until that person is unable to fight back or is otherwise incapacitated.