recovering whumpees who have trauma from collars.
maybe whumper used to use a shock collar on them. maybe it was just a regular ol' collar, designed to remind them of who they belong to.
regardless, they're safe now, aren't they? at least, that's what they try and tell themselves. but their body seems to have different ideas.
maybe a team member playfully clasps their necklace around whumpee's neck and looks at them in horror when they start yanking at it and babbling whumper's name.
maybe whumpee has to attend a fancy event and has to spend the whole night trying not to sob because the collar of their button-up shirt is too tight around their neck and it reminds them of whumper's collar. maybe they spend the entire event in a daze, dissociating so hard they're barely there. maybe whumpee is normally outspoken and bold, but for the duration of the event they are perfectly mild-mannered and agreeable -- except every time they make a mistake, they brace for a shock.
maybe caretaker is bandaging a broken arm and goes to fasten a sling around whumpee's neck, only for whumpee to break down and injure themselves even more in their haste to get away.
its even better if the team doesn't know what whumpee went through :) they have no idea what's going on when any of these things happen, and whumpee refuses to tell them. maybe whumpee is embarassed -- how pathetic is it that they can't handle anything touching their neck because of some dumb collar whumper used to make them wear? to the team, it just looks like whumpee is being argumentative and hostile for no reason. "it's just a fucking button-up shirt, whumpee! get over it!"