Having been a fanatical supporter of the original Galactic Empire in his youth, Andrelious became very disillusioned when the Empire fell apart after the death of Palpatine. He still holds the belief that the Empire is the galaxy's legitimate government, even if it no longer possesses the means to rule.

Instead, Andrelious has dedicated himself to serving what he considers to be a worthy mini-Empire; that of Clan Taldryan.

His extreme belief that the Empire was in the right often leaves him distant from others who have anything negative to say about the former galactic power.

Andrelious, having seen many years of conflict of various types and scale, is well versed in the art of alliances. He has no qualms about forging a temporary alliance with the most unexpected of people, should they have a common enemy.

However, this alliance may prove to be not only temporary, but volatile as well once the common enemy has been defeated, as Andrelious would think nothing of betraying his former ally should doing so prove beneficial.

Since marrying Kookimarissia, Andrelious has become incredibly protective of the Alderaanian female. At times his thoughts of her have occasionally distracted a little from the mission. Andrelious has also extended this protectiveness to his twin daughters. Additionally, the Sith has discovered an elder daughter, Saskia Ortega, the product of an unfortunate rendezvous. Whilst he does not yet have a real connection with Saskia, the ex-Imperial has vowed to change this as time goes on, and has already begun to consider the Cirrian as part of his family.

Andrelious has quickly developed an intense hatred for the Collective. He is deeply opposed to all of what they stand for, especially their insistence that anyone who wields the Force is to be eliminated. As all of his children are included in their targets, Andrelious will not stop until the Collective is completely eradicated.

His single minded determination to defeat the Collective leaves him very unlikely to successfully complete any mission where the objective is not to kill the target.

Andrelious is renowned for his brutal killings of his enemies. He always appears to be looking for new ways of not just killing, but ensuring a great deal of suffering among those that become his prey. One of his favoured examples is to sever the windpipe of his target with his lightsaber, leading to a slow, suffocating death. The drawback of this is that Andrelious will sometimes over-analyse how to kill somebody rather than getting on with the job.

Whilst deadly with a lightsaber or blaster in his hand, Andrelious has shaped his command of the Force to the point that he is never truly unarmed. He relies mostly on Force Lightning, and to a lesser extent, Telekinesis, to attack his opponents.

Although aware of its draining effect, Andrelious will often exhaust himself through overzealous applications of lightning.