Yes! I have a few full stories that are on indefinite hiatus (Whippoorwill is coming soon, I promise!) and I've never shied away from repurposing characters from inactive stories, Copperhead's local preacher Arnie is originally from an old story called Sacraments of Sin! Besides that though, I'm not one to tell my stories in a very linear fashion so most storylines I have for these characters do get used at some point or another! Imagine the ones you hear about being like side missions in a game!