Lethe from Fire Emblem: Path of Radiance,Radiant Dawn (Fire Emblem Heroes outfit). Tested at 0.8-1.0 strength.
Halloween outfit trigger word is "halloween lethe".
Add "furry female,animal ears,hood,facepaint,choker,paw gloves,dress,belt pouch,striped leggings,paw shoes,cat tail" for her halloween look.