Not much is known about Vincente's history.
Vincente is one of the few characters to make their first appearance in another universe before he finally starred in the 616 universe. He first appeared in Generation Next #1
and was a superhero. The 616 version of Vincente was very different from the Age of Apocalypse version (he was a villain) and first appeared in Generation X number 12, almost a year after his heroic counterpart version of the Age of Apocalypse first appeared.
Mayor Story Arcs
First working along Emplate, Vincente was ordered to attack Generation X alongside Murmur, Bulwark, D.O.A., and Gayle Edgerton. He turned himself into a liquid state, and hid inside of a pot of soup at a restaurant Generation X was going to be at later. When M opened the pot to smell the soup, he turned himself into a living mist and flowed into her lungs, suffocating her. However, she was able to telepathically alert X-Man and Bishop of the danger before she and most of her team passed out due to Vincente strangling them.
When Bishop arrived, Vincente tried to smother him as well, but because of Bishop's absorbing powers, Vincente was being pulled into Bishop's lungs. Vincente escaped and fled the battle with Murmur. He appeared once more when Emplate's Hellions tried to reclaim Penance for Emplate. By this time, Vincente had mastered the ability to turn poisonous in his mist state. However, he was defeated once more.
It is unknown how the events of " Decimation" have affected Vincente.
Powers and Abilities
Vincente is able to shift his state of matter from solid to liquid to gaseous, and to make his gas state toxic to others. He can also mimic any liquid or gas he mixes with, for example, he can turn into soup or dirt by mixing with it.
Age of Apocalypse
Vincente is one of the few characters to make their first appearance in another universe before he finnaly starred in the 616 universe. In the Age of Apocalypse, Vincente joined Generation NeXt. When the team had to infiltrate the Core, a human interment camp and nuclear reactor, Vincente worked with Husk and tried to get past the security guard, Quietus. Husk tricked Quietus into drinking a flask full of liquid that was really Vincente in his liquid state. He exploded back into his solid form while inside of Quietus, killing him instantly. However, the pair were later attack by the Sugar Man, and Vincente was mortally wounded by his razor-sharp tongue, despite being in his mist form.
In Other medium
He has not appeared in any other besides comics