​It’s just been announced at sdcc that ego the living planet is star lords father and he will me In guardians of galaxy  2 . Ego  he the living planet  normally sliver surfer comic book and guardian of galaxy stories too does make use that character in movie

Nothing confirm  but i think  Sylvester Stallion  playing  Ego living planet because  James Gunn Explains The Importance Of Sylvester Stallone In Guardians Of The Galaxy Vol 2.
that theory  about that folk Guardian of galaxy release in theater  May 5th 2017.