This concept art comes to us from the social media of artist Jerad S. Marantz, who has worked as a concept artist on a variety of Marvel blockbusters. In addition to Guardians of the Galaxy Vol. 2, he also helped to develop the visual language for other movies like Spider-Man: Far From Home, Infinity War and Endgame, Doctor Strange, and Captain America: Civil War. Marantz has a unique look into the mysterious MCU, given information in order to help render his concept art pieces.
Article source: https://www.cinemablend.com/news/2496000/guardians-of-the-galaxy-2s-concept-art-for-ego-doesnt-even-look-like-kurt-russell