Legion is a firm believer that the galaxy at large would be better off without the Force, those that command it, and those that follow them, mirroring the views of Liberation Front leader Rath Oligard. After watching the galaxy burn time and time again during his relatively young lifespan, Legion has devoted himself to eliminating any notion of the Force from the galaxy, starting with agents of the Dark Brotherhood.

Legion sees himself as the control subject in the science experiment called life. Often labeled as "boring" and "predictable", Legion keeps his wild and experimental side reserved for pet projects. This boring lifestyle leads to him being considered anti-social and when he does join others, instead of relaxing he prefers to keep quiet and observe.

Legion has a legendary and virulent need for vengeance. Once crossed, he will make it his life’s work to ensure that whatever slight was received is repaid tenfold. This need for vengeance can be all-consuming, and can often lead to short-sighted decisions.

Legion has a very bad attitude. He enjoys picking fights and causing trouble, and as such, he isn't phased by most encounters because, let's face it: he tends to be involved in quite a few of them around here!

Legion possesses a single minded drive for victory, and a deep-seated martyr complex. When presented with a chance to wade into battle versus overwhelming odds, Legion does not hesitate, and instead rushes in, relying on skill, fate or chance to let him survive.

Even the most gifted of weapon masters understands the importance of physical fitness and disciplining the body with through martial arts training. Legion 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, Legion is still limited in scope when facing down a less direct or ranged threat.