“For over a thousand generations the Jedi Knights were the guardians of peace and justice in the Old Republic…”
The Adventurer is a veteran Jedi agent. By 'veteran' I mean experienced rather than old; Adventuers tend to be late 20s/early 30s. Other than his broad experience of Jedi missions, what distinguishes an Adventurer from his fellows is his extreme curiosity and wonder about the Galaxy. he tends to take the more dangerous or exotic missions and assignments simply so he can learn something new. Over his career the Adventurer has picked up all sorts of skills and tricks; he is a highly skilled Lightsabre fighter and well skilled in the ways of the Force also. The Adventurer's speciaism is skills, but he's actually good at everything, so if in doubt, take one of these guys.