The icy skeletons were summoned by the Bringer when he was awakened by the Thieves Guild on Terror Mountain. Like most mindless monster hordes in the world, they went around aiming for general destruction, their ranks being one of the sides in the Battledome component of the Hannah and the Ice Caves plot. Those that appeared were:



Skeleton Warlord: GRRRRRRR....
Try to put some effort into your fighting...
Not much can be done to save you now...
ARRRRGH.... Why did you do that?!?
BOO!
I hope you did everything you wanted to do....
GRRRRRRR!
Prepare to die.
Soon you will know what it feels like to be made of ice...
Ice is good for healing your bruises...
Did you get hurt? HAHAHA!
Hahahaha!!
The Icy Skeleton Hordes also feature in a random event that steals a few of your Neopoints. It appears that following the defeat of the Bringer of Night, they have reorganised under the leadership of the Skeletal Warlord.