Nemesis

Nemesis has an origin shrouded in mystery. It is said that she was the the sentient being that created the Infinity Gems, it is also said that she might be older than the current universe. At a moment in her history she committed a form of suicide, and transformed herself into six very powerful gems, the Infinity Gems. Each of the gems possessed an incredible and different power, which the wielder of that gem would acquire. The vampire known as Rune tried to reunite the Infinity Gems into the entity known as Nemesis. He traveled to the Marvel Universe to take possession of the Infinity Gems that the Infinity Watch had. The Silver Surfer was sent to battle Rune and prevent Nemesis's resurrection, by the Living Tribunal. The Silver Surfer managed to blast one of Rune's hands in which he held 5 of the 6 Infinity Gems. The last Infinity Gem was the Soul Gem and was on Rune's forehead. The 5 Infinity Gems were scattered throughout the Ultraverse, where several were found. Soon after Loki, Thor's half brother, and Odin's adopted son, traveled to the Ultraverse and gained possession of the 6 Infinity Gems. Then the Elder of the Universe Grandmaster, came and challenged Loki to a bet, where they would have to wager their Infinity Gems. Loki with his 6 Infinity Gems and the Grandmaster who wagered his seventh known as the Ego Gem (which was possessing the Eternal Sersi). Both selected two teams from both Marvel Universe and Ultraverse. The Grandmaster picked the Avengers from the Marvel Universe, while Loki picked the Ultraforce from the Ultraverse. Eventually Loki won this interdimensional wager, by using his Reality Gem. When Loki and Sersi came into contact the seventh gem fused with the other Infinity Gems, recreating the original form of the Infinity Gems, Nemesis. As the living embodiment of the Infinity Gems, Nemesis could achieve virtually anything just by simply willing it.