An older Wizard named Ezren, who looked particularly feeble and easy prey to Ghirs parents, was ambushed by them on the side of the road. Seeing them coming from some feet away, Ezren pulls out a Scroll of Burning Hands, burns the young Goblin’s parents to a crisp, and continues on his way. Ghir, suffering from his species’ brutal metabolism, is unable to resist the amount of meat that has been laid before him. Truly having a full stomach for the first time, this began Ghir’s taste for flesh.
Ghir wandered for a decade in the woods and swamps of Varisia, mostly eating carrion, sharpening his teeth and strengthening his powerful jaw as he snapped bones to suck out the marrow.
As he grew older, he fashioned a sort of make-shift suit of armor out of wood, and used the lid of a barrel to form a heavy shield. Adorned as such was how the Licktoads found him.
Having lived in solitude for so long, Ghir’s grasp of the Goblin language had slipped, and upon asking him to identify himself, Ghir didn’t understand. He did remember how good Goblin flesh had tasted to him from all those years ago. Due to the timing of how quickly he tried to take a chunk of flesh out of one of the Goblin’s thighs, Ghir's exclamation of “GRRRRRR OMNOMNOM” was taken as his answer to their question of "Who are you?" The name stuck.
The two Licktoads beat Ghir senseless and brought him before Chief Gutwad, who brokered a deal with Ghir: If Ghir promised not to eat Licktoads and their Goblin-Dogs, he could eat anything else he wanted, including what food they would get in raids. Ghir’s mouth watered at Gutwad’s description of the spoils of battle, and agreed wholeheartedly.
Since then, Ghir has been living with the Goblin Dogs in their pens and happily scavenging for new bones to eat. This new development with Scribbleface, though, caused him to relive the fear of watching his parents being killed by magic, causing him to lead the charge in punishing the Writer for his misdeeds. Who knows what magic those horrible words could bring forth?