History
Antoni was a mutant who used to live in Poland with his son Filip, before he was tipped off by a friend in the police force that the Polish government was about to try and exterminate mutants (due to Cassandra Nova manipulating the Polish President into signing an anti-mutant bill)
Antoni, Filip and a number of other mutant tried to escape across the Baltic Sea, but were hunted down by the army. They were rescued by a team of X-Men led by Jean Grey. Antoni and his fellow mutants were then taken to safety to Searebro.
Powers
Antoni has the ability to puff up his neck like a Cobra when threatened, most likely to spit some form of acid, although this has never been seen.