During the Tai Bwo Wannai Trio quest, all monkeys located on Karamja cannot be damaged by Melee attacks (the player will be unable to touch them), Magic and Ranged are the only ways to kill them. This only occurs during the quest; before and after the quest they can be damaged by all attacks. It is possible to kill one without using Magic or Ranged by using ring of recoils. If the player is wielding a halberd and is standing out of the monkey's melee range then they will be able to hit the monkey with the halberd's melee attack.