In Knight's Keep
In the Wailing Tunnels under Sir Liam's Castle
You can get there from the well near Sir Liam in Knight's Keep. These are Tunnels under Petpet Park
It's Agnus, but it doesn't matter until you find Grunble's Gramma's hat. Once you find the hat, he'll tell you the codeword, then you have to open the vault, then return to Sir Liam.
you need to talk to sir Liam he will give you a note pad to draw the tower for him and get him a mushroom and go back down and he will give it to you
talk to durc then talk to grunble for a mission to find his missing hat go to the second tunnel your gonna find something on the ground you click on it return to grunble then click on the brick behind Borbor return to sir Liam to complete the mission
Sir Liam will direct you to the Wailing Tunnels. Talk to the bandit leader Durc, then recover the hat for Grunble, who will give you the codeword. (There is a walkthrough at the related link.)
The Petpet Plaza is found by easily looking in your map on Petpet park.
You can use your Neopets account for PetPet park.
Petpet Park was created in 2008-10.
You don't.
At the Petpet Emporium.
you guessed it, it's in PetPet Park :) hammered you