Guardians of the Galaxy Vol.3 introduced a new and powerful enemy in the High Evolutionary, showing that, even after Thanos, there were still beings that sought to achieve their goals by any means necessary. However, what made this one different from the likes of Ego or Thanos was that he was convinced his actions were to perfect evolution, and each life taken was a step along the way. Everything to him was a science experiment until Rocket Raccoon proved that great things aren't always supposed to be perfect and defeated him.
Source：https://www.cbr.com/high-evolutionary-mentor-role-mcu/
