Star-Lord (Marvel Cinematic Universe)

Peter Quill, also known as Star-Lord, is one of the main protagonists and the true main protagonist in Guardians of the Galaxy. Originally from Earth, he was captured and adopted by the space pirate known as Yondu Udanta, after his mother tragically passed away. The young human was raised among Udanta's crew calling themselves the "Ravagers". Quill eventually became an expert pilot, gunslinger and thief. After learning of a great threat to the galaxy, Quill becomes the leader of an unlikely group of heroes to defend it and it's people.

Guardians of the Galaxy
As a young boy, Peter was orphaned when his mother died of leukemia. Out of grief, he ran away before being caught up in a spaceship.

Years later, Peter became a notorious outlaw after stealing a magic orb from an evil warlord, Ronan the Accuser. He ended up in jail, where he came across Groot, a colossal talking tree, Drax, a super-strong man determined to avenge his family's murder; Rocket, a wise-cracking raccoon, and Gamora, a fearless green assassin. Together, they break out of prison and after a while become a team.

Peter's mission is to protect the orb and defeat Ronan, in addition to saving the universe.

Trivia

 * In the film, nobody remembers his alias is Star-Lord, instead calling him Star-King, Space-Lord, etc.
 * In the film, Peter is played by Chris Pratt, who also voiced Emmet Brickowski for The Lego Movie.