Vincent's historyVincent is from 100 years ago. In Alice's memory, a young Vincent is seen walking among corpses, gouging out eyes and intestines with a pair of scissors saying that "It's not my fault, it's that person's fault, it's all because of that person," he was doing this to save his brother. He is also shown to be in alliance with the Baskervilles. It was him who called Zwei out from Echo, telling Echo that she is not required anymore in order to release her other personality. He is seen going on a date with Ada Vessalius shortly after those events. In one of the most recent chapters that gives some insight into their date, they are discussing the situation concerning the Headhunting. Meanwhile his true thoughts show that he may be planning to harm Ada in order to draw Gilbert's attention, believing that she is an important person to Gil. Later chapters have shown that he has become Ada's lover in order to "taint her" as well as make her a pawn in order to retrieve the Key to the Abyss from Oscar Vessalius. Later chapters showed some of his time during 100 years ago. Due to the belief that red eyes will bring disasters, Gilbert and Vincent used to live on the streets where people would attack them whenever Vincent's eye was revealed. This continues until Jack Vessalius found them and brought them under his wings. The brothers then became his servants. He was fond of Jack, who didn't care about his eye and even cut Vincent's hair which was used to hide his red eye, stating that Jack "loves" it. Vincent also called him Master like his brother did. It was also shown that Jack tried to introduce the two to Alice since they were in closer age to her.
Unfortunately, Alice immediately made fun of Vincent's red eye which caused Gilbert to pull her hair. This incident fueled Vincent's hatred towards Alice since she had made Gil "showed that kind of expression again" and Jack sighs in worry and began his habit of tearing up dolls (often rabbits) out of frustration and hatred. He is the prime suspect of Alice's death because of his hatred and his placement in Alice's memories. In one flash-back, Vincent is shown threatening Alice and even giving her the corpse of her cat, Cheshire, after he'd gouged the cat's eyes out. When Vincent found out about Gil's death and how he will be Glen's next body through a ritual from Alice, he was visited by a mysterious lady (later revealed as Miranda Barma) who told him how to prevent the ritual by opening the Abyss's door. Though he had succeeded in saving Gil, Vincent had caused the Tragedy to happen, making himself a "child of misfortune". He has a contract with the Doormouse.
Voiced by: Jun Fukuyama (older) and Fuyuka Ōura (younger)