The seventh Gem was hidden in an unknown realm known as the Ultraverse. This goldish color gem was said to obtain the essence of
Nemesis. She was the omnipotent being, which shattered herself across two universes, because she grown tired of her own existence. It is believed that the Ego Gem is very powerful, it managed to take possession of the former
Avenger Sersi. Once Sersi came into contact with the
Asgardian trickster known as
Loki, who was in possession of the six remaining Infinity Gems, Nemesis was reborn.