Moreno Dortous is a human mage, an upperclassman to Siluca Meletes at the Mage Academy. He later formed a contract with Lord Lassic David, serving as his primary mage. Moreno possesses brown hair, blue eyes, and the appearance of a gentle-looking young man, though he can seem abrasive.

His combat style uniquely blends proficient swordsmanship with magic, stemming from his belief that mages must fight on the front lines. He demonstrated this during a confrontation with Siluca, overpowering her by combining magical attacks with physical sword techniques. Moreno tactically exploits magical abilities like invisibility for sneak attacks, such as attempting to ambush Siluca while she was distracted.

He exhibits intense loyalty to Lassic, prioritizing his liege's cause above all else. This devotion led him to willingly offer himself as a hostage to Theo Cornaro and Siluca to secure Lassic's freedom, expecting execution. Lassic's decision to surrender instead to save him deeply affected Moreno, challenging his view of their lord-vassal relationship. Following Lassic's surrender and integration into Theo's faction, Moreno transitioned into serving Theo and Siluca, supporting their efforts to unify the territories and combat Chaos. His strategic acumen is noted as superior to Lassic's, extending his value beyond combat into planning and advisement.