The Giants of Azurth are a varied lot, not strictly fitting into Gygaxian categories. The giants in the country of Yanth are typically primitive and almost certainly not very bright, though they are not necessarily evil (though they're likely to be). This:
Would reflect your typical Yanth giant. There is some evidence that was not always the case and that in some remote time (maybe before Azurth became Azurth) there were floating cities of blue-skinned, giantish folk, who enjoyed a life of science fictional splendor as only mid-century America could correctly imagine. They looked something like this:
They all disappeared and their cloud cities are mostly abandoned, except perhaps for a few degenerate examples.
Beyond Yanth, in the countries of Sang and Virid, giants are often less human looking and more uniformly hostile--though still not exclusively. This would be a giant you might find in those lands:
5 hours ago