On a basic level, the damaged remains of some ancient aliens every so often start to effect the location where they were destroyed and improperly disposed of, and can become like monsters. It falls to the group, as headed by two of the still living aliens, to find when and where this happens and properly deal with them. Supposedly there is a bigger danger to the planet itself, though my character doesn't really believe that and thinks it's the alien characters worrying too much, so just helps out with the usual alien remains cleanup or alien site maintenance, largely because he gets dragged along but also because he doesn't want people getting hurt if he can help prevent it.
What's your character fighting for, Veeky Forums?
Cooper Reed
Liam Hughes
The only one who loves him.
Wyatt Diaz
For sauce on that pic.
Asher Gonzalez
There are perks for fighting for the adventurers' guild, so she does odd jobs in her quest to visit every mountain view.
John Green
Money.
Juan Mitchell
He swore a solemn oath to obtain vengeance for his father's death or die trying, and he can't go home until either the former or latter happens.
Logan Rogers
Nothing and unfortunately he has nothing else but fighting.
William Johnson
Knowledge
Joshua Foster
Truth, justice, and the American way.
In reality: To work through his midlife crisis. Supers setting.
Lucas Ward
Honor and respect.