Read more about Vessel at: Wikipedia

Official Site: Marvel comics

Vessel is a fictional villain created by Marvel Comics for their team called Gene Nation. His first appearance was in Uncanny X-Men #324. He is one of the few members to remain in all three incarnations of the team.

When the mentally unstable Mikhail Rasputin flooded the Morlock tunnels, many were believed dead. However, at the last instant Mikhail used his powers to open a portal into a parallel dimension dubbed The Hill. In this dimension, time moves at a faster rate, and even though it was a manner of months in the main Marvel Universe, it had been between 10-20 years on the Hill.

On the anniversary of the Mutant Massacre, a horrific event in which Mr. Sinister's henchmen the Marauders killed many Morlocks, the members of Gene Nation reappeared in the main universe (Earth-616). Their mission was to destroy one hundred humans for every Morlock life that was lost. Vessel along with Sack were the first members to show themselves, killing a few civilians. They battled with Wolverine, Storm, Cannonball, and later Beast and were hardly fazed by their show of force. Wolverine was unable to harm Vessel, who boasted that his ability to heal was better than Wolverine's fabled healing factor. He discovered that inside of Vessel were "shining lights" that must be released in order to defeat him. Once this was revealed the two Gene Nationals fled.

Afterwards, a team of X-Men and the Morlock Callisto confront an attack group from Gene Nation including Vessel, threatening the lives of several civilians by attaching incendiary devices to them that were regulated by Marrow's heartbeat. Seeing it as the only way of stopping the terrorist, Storm rips out Marrow's heart. Defeated, Callisto takes Vessel, along with the remaining members of Gene Nation, back to The Hill.

Vessel has not been a contender in any CBUB matches.