Base of Operations
Sabretooth, Wolverine, Maverick, Kestrel, Silver Fox, Mastodon, Major Barrington, Noel Higgins (Wildcat), Aldo Ferro
Sometime around the beginning of the Cold War in the 1960, a black ops team was created by the CIA and the people behind the Weapon X program (which was linked to the Weapon Plus Program). This black ops team became known as "Team X." Although little is known about what the team did while they were active, it is known that most of the team had their memories wiped after almost every mission. Team X was considered the best the United States had to offer, and faced off against the KGB on many occasions. (To learn about the programs and/or group highlighted above, just click on their names.)
It appeared that Sabretooth was the highest ranking of the team. He was the one that recruited Wolverine, and appeared to be the only member of the team who knew any details on missions. Wolverine had his memory wiped after every mission. In fact, whenever Wolverine would question orders, Sabretooth would kill innocent people. Maverick (aka Agent Zero) was hired from outside the CIA, and didn't know much about what the team did. Kestrel was the extraction expert. He used his teleportation powers to get the team out of many tight spots. Silver Fox was romantically involved with Wolverine for a time. In the end she betrayed the team due to a strange reaction to her memory implants. Mastodon is not mentioned much, and very little is known about him. Noel Higgins (Wildcat) and Aldo Ferro were almost part of Team X. (To learn about the above highlighted members of Team X, just click on their names.)
Afterward, realizing how important the device was, Wolverine did not want it to fall into the hands of his masters; therefore, he gave it to Maverick to hide. Over the following decades, Omega Red tracked Wolverine and Maverick down many times in an attempt to retrieve the Carbonadium Synthesizer in order to heal his body, and stop its constant decomposition due to radiation.
There is nothing there, but here is the Marvel.com link to the bio of Team X, http://marvel.com/universe/Team_X.
In the film X-Men Origins: Wolverine, Team X is just slightly different than what is in the comics to fit into the X-Men movie timeline. In the movie, the team is led by Col. William Stryker, and consists of Wolverine, Sabretooth, Deadpool, Blob, Wraith, Bolt, and Agent Zero.