Addyn'nephs 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.

Through a combination of preparing, studying, and analyzing, Addyn'nephs creates detailed battle plans and tries to think two steps ahead of the enemy. At times, however, this can lead to Addyn'nephs creating complicated schemes that can baffle less intelligent subordinates.

All who gain power are afraid to lose it, and Addyn'nephs is no exception. Some use their power for good, some for evil; Addyn'nephs, however, knows that these are just points of view. He is on a quest for greater power, and uses all his skills and abilities to ensure his supremacy, regardless of the consequences.

Addyn'nephs has a tendency to be secretive and keeps to himself, relying on deception to conceal his motives and intentions. He is a schemer, and plots and plans against others carefully. When dealing with a confrontation, he will try and bluff his way out of trouble, or overcome obstacles with deliberate, covert actions.

Sometimes the only way to prepare for the worst is to always expect it. Addyn'nephs takes this philosophy one step further by never leaving home without accounting for every possible scenario he might expect to encounter. Addyn'nephs 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.

Addyn'nephs seems to get his thrills, perhaps sadistic ones at that, from toying with his opponents. Some are content with simply striking down or injuring their opponent, but that is not enough for Addyn'nephs. No, he wishes to see his enemy descend into madness or kneel before him as a blathering mess; or even better, as a fresh new servant with a muddled mind. The Puppeteer usually forsakes outright hurting and maiming his opponent and focuses on illusions, mind tricks, and other wicked means of destroying a person.