'Harold is bright white helicopter on the NWR. He currently flies about the island to look of any site of danger.
Harold was built in the UK many years back and was sent to Dryaw airfield to patrol the island for any trouble, He first met Percy when he had stopped at the airfield and then soon had a race with Percy and lost when he couldn't find a place to land!
Later Harold got into a accident in a farmer's field when Percy was stuck at a broken signal.
Harold is somewhat of a whirly bird thing in the sky to some of the other engines, He speaks likes an RAF pilot, Using terms like Old chap or Wizard if in a conversation. Despite this Harold is always on the scene if trouble is at hand.