Zax Tenno sees himself as the control subject in the science experiment called life. Often labeled as "boring" and "predictable", Zax Tenno 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.

Someone in Zax Tenno’s past was killed and he has vowed to avenge their death. Should the object of his vengeance be discovered, he is likely to to do whatever he can to exact revenge, no matter the cost.

Zax Tenno has a tendency to get addicted to things, even if those things aren't addictive.

Zax Tenno rarely acts without an alternate motive when it comes to lending aid or acting in a situation. Be it greed, power, or something else, almost undoubtedly Zax Tenno is after something more than what he says - though sometimes Zax Tenno is even blunt enough to admit to it. While his self-serving attitude comes as a boon, usually, to his survival and pocketbook, his relationships are often strained by his outright selfish attitude.

Zax Tenno works hard to maintain an image of fierce tenacity despite being of a smaller stature. To that extent, Zax Tenno has learned to not take jabs about his stature offensively, but to instead burn them quietly as fuel for his inner spirit. The flame that is sparked as a result is controlled by Zax Tenno's discipline of never overestimating his own abilities or those of his opponents. He has trained to fully utilize his size as an advantage when fighting larger opponents. He knows exactly how to leverage his weight to deliver the most effective take downs or maneuvers. The effort to maintain this image can be draining at times, and when outmatched or overwhelmed, Zax Tenno becomes susceptible to a loss of spirit.

Sometimes the only way to prepare for the worst is to always expect it. Zax Tenno takes this philosophy one step further by never leaving home without accounting for every possible scenario he might expect to encounter. Zax Tenno tends to always have the right tool or item for a situation and has a habit of quietly and almost smugly presenting solutions before anyone even recognizes there is a problem. This foresight is far from infallible, however, and he often finds himself at a loss in situations that go beyond what he could have imagined. While incredibly practical and often a life-saver in a pinch, his perpetually pessimistic outlook on daily life can be a bit draining on more optimistic-inclined companions.