J'son

J'son is the father of Starlord and the main antagonist of Guardians of the Galaxy.He is also known as Mister Knife.

J'son was the only son of the previous Emperor Eson, and therefore was Prince and sole heir to the throne. Rejecting his idealism, the ruling Council of Ministers prevented J'son from taking the throne. The future emperor would be educated, as per Spartax tradition, by being brought up on dozens of the Empire's planets working many professions, including servant, miner, poet, soldier and pilot - excelling in the latter two.

When the Kree empire forced in the inhumans to attack the shitari empire in an attempted to assassinate the empress Lilandra J'son was accused of being apart of the attack and was deemed unworthy of the throne.

in other media
J'son appears in the Guardians of the Galaxy animated series. He serves as the main antagonist of season 2 replacing Thanos.

In the marvel cinematic universe Ero was a mix of himself,the celestials,and J'son as the father of star lord in vol 2 sequel of the Guardians of the Galaxy.