The Gatekeeper is a tree like figure who guards the gate to the Zanaris market area. He will only let players pass if he is paid one cut diamond (he will waive the fee if the player has done A Fairy Tale III - Battle at Ork's Rift). He says that the diamond is used to make fairy lights. He guards the dragon dagger and dragon longsword shop, and the gem market.
He says the door man that was there before the Zanaris update was his father. When asked about this, he replies "I got my good looks from my mother."
There is another gatekeeper guarding the shady grove that is filled with baby tanglefootii.
- Mod Biscuits stated on the Official Runescape Forums that "The Gatekeepers were originally referred to as Mindslayers by the original developer of the fairy storyline. We still sometimes refer to them as Mindslayers even now. It's just an internal name we use for the Gatekeepers.".  The name "Mindslayers" is likely a reference to Mind Flayers, a type of creature from Dungeons & Dragons that bears a very similar appearance.
- If you talk to the gatekeeper outside the shady grove, his name would appear as "Gate Keeper" in the chatbox.