Later, Logan was approached by Charles Xavier to join the X-Men, a group that fights for peace between humans and mutants. Initially proving to be a challenging addition to the team due to his aggressive behavior, Wolverine has gradually grown fond of the X-Men and considers them to be his family. At some point, he also became a noteworthy member of the Avengers. Moreover, he has been tasked to run the secret mutant strike team known as X-Force to protect mutantkind's interests by employing lethal force. Wolverine was also responsible for reforming the Jean Grey School to lead his own faction of X-Men.