Very little is known about Zbigniew X. At some point he joined the X-Hawks.
Zbigniew X was created by Grant Morrison and Doug Mahnke. He made his first appearance in Seven Soldiers: Frankenstein #3.
Major Story Arcs
Seven Soldiers of Victory
Zbigniew X gets lost in Salvation Valley during the Water crisis. He confronts Frankenstein and Lady Frankenstein, who are sent to recover him. Having drunk the water he has gone mad, and is terminally infected, as it is a carcinogen. Following the Water's destruction, he is decapitated by Lady Frankenstein, and his head is preserved and presumably grafted onto a cybernetic body in order to preserve the investment in his piloting skills.
Powers and Abilities
Zbigniew X has no known superhuman powers or abilities. He is a skilled soldier and pilot.