Goblin priestess of Tymora who's on a mission to free her people from their tyrant god Maglubiyet, and change hearts and minds for goblins in large cities through setting a personal good example.
Treant druid who's on the run from the authorities because she keeps planting knotweed in the foundations of various large buildings and temples. (I used the tortle lineage for stats)
Middle sibling from a noble family who is competing against all the other siblings to "earn the most money" by a set date, because the one who brings the most cash home gets the family inheritance. Decided "adventuring" had the best return for time spent.
Imprisoned Artificer who designed and built a robot (5e "nimblewright") that she could telepathically pilot - then sent it out to go recruit an adventuring party to rescue herself.