As a young boy, Garsiv enjoyed his training with the sword. Since the day that Dastan stepped into the palace, the pair have shared a "friendly" rivalry. While stubborn, Garsiv is very loyal to his family. He was eager to prove his worth on the battle-field. This often makes him act before thinking.
The Sands of Time
Garsiv wished to lead the army of Persia in the invasion of Alamut. In the end Dastan took the city by stealth, in order to avoid the death of Garsiv's men.