Star-Lord
Abilities: Star-Lord is half-human and half-Celestial, but with the destruction of his father came the destruction of Star-Lord's power source. At this point, he's just a human with fancy gadgets and a lot of confidence. He also seems to have retained some superhuman durability.
Power scale: 1. While Star-Lord is a skilled fighter and marksman, his recent performances have all but stripped him of his credibility. He single-handedly ruined the near-successful plan to defeat Thanos (after barely even helping subdue him) and then would've been killed by some lame alien in "Endgame" if Gamora hadn't saved him. He's nearly useless when he's not coordinating with a team.