Skreawk (Skree-ock), for me. Halfling who was left at the orphanage at a very young age, wound up wandering while unsupervised into the ruins. They thought she would have been killed out there, but a few decades later she comes back, barely able to even speak the normal language, and completely at home in the jungles and ruins, having grown up with the animals and monsters of the place. Good at surviving and scurrying around, terrifying in combat for her size but inherently limited in her offensive abilities because she's so small. In theory, a large, strong allied character could actually throw her into / onto enemies. Once she gets into a grapple with someone and her bone-and-wood weapons come out, she very much has the upper hand. It's hard to dislodge a small, strong person who's clinging to you like an angry monkey and is making a point to stab any bit of exposed flesh :P