http://comicbook.com/marvel/2017/04/17/guardians-of-the-galaxy-vol-2-sylvester-stallone-role/
“A lifelong respected Ravager, Stakar isn’t fond of Yondu. Sylvester Stallone offers the character’s backstory: “Stakar had banished Yondu many years earlier for doing something wrong and he finally sees him almost twenty years later at this particular establishment called the Iron Lotus where all of the Ravagers go to blow off steam. And then we have a confrontation which is pretty intense and it’s kind of a father/son type of thing and now he’s going to have to pay the piper. His karma has come back ten-fold.”
If the name Stakar sounds familiar to you, don’t worry - it is meant to. In the comics, Stakar is better known as Starhawk, and he is a major player in the intergalactic series. The cosmic character helped form the Guardians in the 31st century, and he is the son of heroes Quasar and Kismet. Formerly a member of the Reavers of Arcturus, Starhawk is known as a sort of antihero who teams up with his sister-turned-lover Aleta Ogord.