Name: Logan (last name or first name) (also goes by Patch)
First Appearence: The Incredible Hulk #181
Logan, or how the Canadian Government would call him - Weapon X, was covered with Admentium, the strongest metal on earth in some point of his life, and far as he believed - implanted with some kind claws in each of his hands. The experiment only worked with this subject, because he was a mutant with a healing factor.
He performed all kind of missions for the Government, until a man, Charles Xavier, asked for The Wolverine to join the X-Men, he also said that Logan could be a "Free Agent", and he'll learn how to use his powers better. Logan agreed immediately. On his first mission, on the lead of Cyclops, to rescue the original X-Men from the living island Krakoa, he showed his savage movements. After he got back to the mansion with the rest of the X-Men, his next mission- To make a move on Jean Grey. Angel stopped him in the beginning. Until today he is jealous of Cyclops for marring Phoenix.
He's an important member of the team because of his intense knowledge in the martial arts, his animal senses are the best there is. In one the latest battles with Magneto the Admentium Skeleton was taken out from his body, a process that almost killed him. After that accident he found out that his claws were actually made from bone in the beginning, from that point on, he became less and less "human" than he already is.
Another important accident happened when Wolverine met Genesis, one Apocalypse's Dark Servants. He tried to overlay Wolvie's skeleton with Admentium ( that he from Wolvie's most hated enemy - Cyber ), and by that to stop him becoming a dangerous animal, AND to put him implants so he could be controlled and to serve Apocalypse. CannonBall triedĘ to save him, but he was stopped. At that moment, his body rejected the Admentium Implantation. Logan got away after a pretty "wild" fight.
These days, he is more human ( or mutant, as you wish ) than ever! After Operation: Zero Tolerance, Cyclops left him to take care and over of the team and it's newest members. For now, he's doing fine, even though Storm is much more responsible.. :-)