Citadel is a Marvel Comics villain and an enemy towards both Wolverine and Alpha Filght.
Citadel was a soldier that got injured over seas. When he got injuried, he was sent to a weapon plus facility. While there, he and a few other soldiers had Adamantium grafted to there bodies (except for their eyes). He was the most successful subject of the process. After breaking out he organized his fellow test subjects, and captured the governor general. He was planning to get the media’s attention and expose the project unless he and his men were compensated, but because of the actions of Wolverine, Snowbird, Aurora and Shaman he failed. Since then, Citadel wanted revenge on Alpha Flight and Wolverine.