The term "giak" usually refers to the Mountain giak, the most vicious of their kind. They were ruthless and bred to delight in the destruction of all things. They were the mainstay of the Darklord infantry. For all of their endearing qualities, giaks are not intelligent or brave. The Darklords counteracted this deficiency with the Gourgaz.
Another weakness of the Moutain giaks were their unfamiliarity with forested areas. Giaks were often seen riding Doomwolves.
There are other breeds of giak: Swamp giaks, and Szall.
The Giaks spoke a language that was used by most of the Darklords' servants. It was a simple, guttural language designed to give and recieve orders in battle. Its vocabulary was therefore very limited. It also had a written form. (See the Giak Lexicon)
Even the Good gods are mostly devoid of compassion for mortal beings.
For sixteen years they trained him as a Shianti wizard in the hope that he would destroy the Shadakine Empire. He mastered five of the seven Lesser Magicks in the time of his training and, in the year MS 5050, he accepted the quest to regain the exiled Moonstone and use its powers to defeat the Evil Shasarak.