#slumberer__sleeper  a rester who is sleeping
  supertype:  rester  a person who rests
  subtype:  dreamer  someone who is dreaming
  subtype:  Rip_van_Winkle  a person who sleeps a lot
  subtype:  sleeping_beauty.slumberer__sleepingbeauty  a person who is sleeping soundly
  subtype:  sleepwalker__somnambulist__noctambulist  someone who walks about in their sleep
  subtype:  snorer  someone who snores while sleeping
  subtype:  somniloquist  someone who talks while asleep

No statement uses or specializes slumberer; click here to add one.