Vergilius is a man of thin but tall build and exceptionally pale, nearly gray skin. He has a visible scar across his face that goes from above his left eyebrow down to his right cheek, and his hands appear quite scarred as well. He has short, straight gray hair with a slight part in the middle. Vergilius has red eyes which glow when angered, from which he takes his Color Fixer name. He is the buses guide.

Vergilius wears a dark gray loosely-buttoned dress shirt, a striped lighter gray jacket with a badge on the left lapel, slacks and dress shoes. All his clothing are black or shades of gray. Vergilius also sports an earring on his right ear. Vergilius's pronouns are He/Him/His.

Though not visible, Vergilius's body has received some augmentations, with his legs being enhanced with synthetic muscle fibers. Vergilius's weapon of choice is an orange gladius, which can be heated at will.

Vergilius does attempt to not make attatchments to anyone, usually leaving him apathetic or hostile to others, however, he is shown to be quite caring to his daughter; Charon, and over all friendly to the buses manager, Dante. He is also very caring to the orphanage kids, before the orphanage was broken by Tomerry. Vergilius is known to be harsh to others for minor actions, however, he is shown to have a much softer and more caring side when it comes to Charon, and the other orphanage children, being quite patient with them specifically.

Vergilius is a jaded and straightforward individual with a sharp tongue. He is emotionally detached from most of the sinners, 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's 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 (his daughter), 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 (a sinner) 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, and why he still cares for Charon, despite her no-longer being the child he originally knew as Lapis.

Vergilius is shown to have a slight dislike for Christmas Eve, due to the fact that on Christmas eve many years ago, Vergilius had planned to visit his orphanage in the Backstreets and give gifts to the children who live there. When he arrived, he saw that the orphanage had been destroyed by a monstrous being who is killing the children. He fought the strange creature, but their fight was soon interrupted by another Color Fixer. Vergilius and The Color Fixer fought. Vergilius was unable to keep up with her in combat, and was unable to save the orphanage and the kids.

Vergilius was hired to Limbus Company From the group, by a woman named Faust of Limbus Company. Faust had told him that they can give Lapis (his child from the orphanage) back to him. This offer intrigues him, and while he previously would have preferred handling things by himself, he joined Limbus Company anyway as their guide.

Vergilius keeps a photo of the orphaned children in his jacket pocket, which he takes out and looks at occasionally when missing them. Vergilius formerly looked a lot different then now, due to many factors.