From Vanguard Wiki
Fe Fi Foe..erm. Giants are really tall humanoids. They are often depicted as stupid and brutish, but this is not necessarily the case.
Giants were involved in the Orc War as an ally of the Thestran humans, and were located in the eastern mountains of Thestra. Currently, Lesser Giants have been confirmed as existing on Thestra along with Varanjar in the village of Halgarad.
A race known as Sand Giants are known to live in Qalia, descended from the giant explorers of Torsheim.
[edit] Lore Excerpts
"As the orcs scoured the land in search of their next target, the human army raced off in three directions. One division rode high into the eastern mountains and beseeched the giants for their aid. A deal was brokered. One that would cost them greatly, but the humans had no choice. Reluctantly, they agreed. "
A History of Thestra
"Descended from the giant explorers from Torsheim, the sand giants of Qalia are far less powerful than their ancient kin. Separated from the magical powers of the giant homeland for over a thousand years, the sand giants wander the desert wastes wreaking havoc upon all they encounter. It is not unheard of for sand giants to be found amongst small mercenary bands, or as the cohorts of other more nefarious organizations. The sand giants themselves have no nation and no allegiances to anyone aside from those they choose for themselves." - Vanguard Update #1 [1]