Adam Warlock

Species: Human/AI
Enemies: Thanos, Magnus, The Kree
Initially known as “Him” in his debut, Adam was introduced initially as a “savior” or messiah-like figure. He’s an invention of the Enclave, a group of Earth scientists who wanted to make the perfect artificial human. Knowing he’s in possible danger of being taken advantage of, he leaves. He enters space and decides to travel the universe. Yet this forces him to come in contact with the High Evolutionary, one of the most powerful galactic characters in his own right. This is who gives HIM the “Warlock” name.
Evolutionary essentially allows Warlock to live out his destiny, as he’s asked to go to Counter-Earth in order to save it. Evolutionary gives him the Soul Gem to accomplish this. Warlock saves the planet but eventually comes across the Universal Church of Truth where he ends up getting the “Adam” name. Adam finds out the Soul Gem drives him mad when he comes across Magnus, a future version of himself that the Gem turned evil. To save himself, he travels to the past where he absorbs his own soul. Throughout his travels after this, he often uses the Soul Gem to trap people.