Corrected entry: Ego's entire plain revolves around finding an offspring powerful enough to help him. After searching for hundreds of years and children, he finally finds Star-Lord, and just when he's about to succeed, he screws it up by telling Peter that he killed Peter's mom.
Phaneron
13th May 2018
Correction: He only needs Star-Lord's inherited power for his plan to succeed. Star-Lord doesn't have to be a willing participant. Ego even mentions to Star-Lord when he impales him that he can spend a long time functioning as a battery of sorts. One way or another Star-Lord would have turned on Ego, as either Gamora or Yondu would have informed him of all of Ego's dead children.
Phaneron ★