Vergilius is a jaded and straightforward individual with a sharp tongue. He is emotionally detached from most of the group, viewing them as a group of unruly children he has to watch over. He keeps his distance from them, and has no qualms with threatening Sinners with extreme violence or using it to discipline them.

Despite his cold behavior towards the Sinners, Vergilius seems to push people away and put up a cruel and uncaring front, in order to avoid getting closer to his colleagues again, as in Vergilius' past, this has happened before quite recently, with him losing his office and the orphanage kids he cared for at the hands of the Ring. Even so, he has a soft spot for Charon, and he seemingly considers Dante as some sort of confidant, even if he has no outer regard for Dante's struggles.

Vergilius appears ambivalent to his title of a Color Fixer, constantly emphasizing his role within the company as nothing but a simple guide and pushing off Don Quixote and Hopkins' idolization of him, and is shown to carry heavy guilt regarding his past and profession, which has often led him to destroy entire families. This is also part of the reason why he decided to care for orphan children.

Despite this, in Main Story Encounter 6-41, Vergilius appeared briefly as a non-controllable ally unit when a seemingly never-ending horde of enemies from The Wild Hunt emerged from an underground laboratory operated by ex-Ring researchers, forfeiting several clauses of his contract with Limbus Company in the process (which was the major reason behind his strict non-interference in the Sinners' operations), likely as the scene reminded him of the similar events that had led to the death of his Office members, as of Leviathan.