Harshnag

Harshnag the Grim is a frost giant and member of the Gray Hands. Waterdhavians tend to use Harshnag as an indicator that that their neighbourhood is about to become a warzone and know to get out of the area as fast as they can.

Quotes
"Come here little demon, and stop tormenting the nice townsfolk...I will squash you like a bug."

Behind the scenes
CS:W lists this character as being named Harshnag, while the Heroes' Lorebook calls him Harshnagg.