They are active during Dusk/Night, and will retreat to their Hills during the Day. During the Full Moon or Aporkalypse, Elder Mandrakes become neutral, their facial expression changes from a frown to a smile, and they can be befriended with raw Vegetables.
A small group of Mandrakes can be found in the middle of a Set Piece containing three Mandrake Hills.
When one is killed, nearby Mobs (including other Elder Mandrakes) will fall asleep. They are considered innocent creatures and killing them will add 3 naughtiness points.