Infinity Watch
Initially, Warlock did not intend for the Watch to become a team; he believes the gems would be safer if they were all kept separately, but Warlock's old enemy, the Man-Beast, abducts four Infinity Watch members and manipulated their gems in an attempt to destroy Warlock. After the Man-Beast is defeated, the Infinity Watch chose to stay together as a heroic team, except for Thanos. However, Thanos, having undergone a period of humility after the Infinity Gauntlet affair, did not abuse his gem, but kept it safe.