Deena Young (Charlie Young's sister; off‑screen)

Deena Young functions as Charlie Young’s named but off‑screen sister, repeatedly invoked during Charlie’s Roosevelt Room vetting to anchor his personal stakes and family responsibilities. She does not appear or act on‑screen; her presence remains referential, supplying a tangible domestic tie that staffers use to assess Charlie’s character. Across mentions she operates as a stabilizing, private touchstone in Charlie’s biography—humanizing him for colleagues and reinforcing the personal costs and obligations that shape his actions.