And I think it's gonna be a long long time, til touch down brings me round again to find, I'm not the man they think I am at home

Adam Strange- Peter Quill, Star Lord

Peter Quill? A Marvel sci-fi character created in the 1970s by Steve Englehart, a writer I like a lot, and one I only dimly remember from my collecting days. Quill has been revived in the Annihilation series , a huge space opera running concurrent to Secret Invasion and Civil War and so on.

But Adam Strange is emblematic of the science fiction books that DC focused on immediately prior to the super-hero revival in the late ‘50s: the character was clearly modeled on Edgar Rice Burrough’s John Carter of Mars and was introduced in the wake of the “new look” Flash. Strange has since been used in the 1960s onwards as an occasional ally of the Justice League and was reimagined by Alan Moore as an, ahem, stud to the sterile race native to the planet Rann —can’t tell if that bit is in continuity these days.

Commonalities:
Both are essentially earthlings who find their destiny offworld.

Differences:
As far as I can tell, Quill begins as an antisocial asshole and becomes noble once he embraces his destiny, whereas Strange is your typical upstanding citizen common to Silver Age DC.

Alternate histories:

AS: A troubled young man, Adam Strange trains to be an astronaut, but is passed over for a mission. After stowing away on a spaceship, he learns that he is half-alien; his earthling mother had an encounter with a humanoid from the planet Rann. He then accepts his heritage and then travels through the cosmos combatting various antagonists. In the aftermath of a massive interstellar conflagration, Strange has recently formed a modern day iteration of the Legion of Super Heroes.

PQ: Peter Quill is an earthling explorer who is transferred via teleportation to the planet Spartax, where he meets and falls in love with a native female humanoid. He is spirited from one planet to the other for a number of years, but Quill eventually remains on Spartax as its champion, often defending its populace against longtime antagonists the Kree and working with the Avengers from time to time.