Ultron

 is the robotic creator of the universe and the star guardians and the original keeper of the Galatic Star.

Description
To create the universe, he sacrificed himself to be the catalyst for the Galaxy Core. Before this event, he told Gaia about a prophecy of four foreign beings that will be the keepers of the Galatic Star. He also told the other guardians. Ultron passed the Galatic Star to Apollo and instructed all of the star guardians to protect it and maintain the order of the universe.

During the adventures of the star guardians and the humans, Ultron has spoke to Dylan on several occasions to help in their quest.