OK, let's try this. the flavor text on the 3.0 CC version is about 90% verbatim from the Monstrous Manual, so it required a nearly complete rewrite.
This giant looks like a thin, yet muscular human of behemoth proportions.
Verbeeg inhabit the same areas as hill giants and ogres, and often work with such creatures. Though the smartest of verbeeg are only slightly above average intelligence, verbeeg are notably more intelligent than most of the creatures they dwell with. Verbeeg wind up being de facto leaders of the hill giants and ogres, and control these companions through taunts, threats, and intimidation.
A typical verbeeg would be almost indistinguishable from a human, if not for the fact that it is twice as tall as a human. They are more likely than humans to have minor deformities such as club foot, uneven eyes, harelips, etc. A verbeeg wears as much protective clothing and armor as it can obtain, which often isn't much. A verbeeg will usually not have a full set of armor, and thus might wear a mishmash of furs, hides, and pieces of metal armor (roughly the equivalent of hide armor).
A verbeeg is very rarely found wandering alone, and is usually accompanied by any number of other creatures. When not living with other creatures, a group of verbeeg will lair underground in a cave or inside old ruins. Verbeeg are natural symbiotes for brutish, stupid creatures; they provide direction and intellect, and benefit from the protection of the better fighters. Verbeeg will put up with a lot from these halfwits, but lost their temper when the other giants misinterpret their instructions.
A verbeeg tribe is often jointly ruled by a warrior chieftain and a shaman. The chieftain is responsible for the tribe’s hunting, warfare, and other dealings with outsiders. The shaman is responsible for internal tribal affairs, including tribal law and trials and all magic; magical items in the tribe automatically belong to the shaman.
A verbeeg is from 8 ½ to 10 feet tall, and weighs between (300 and 400) pounds. (In 2E, ogres were 9-10 feet tall and weighed 300-350 pounds.)
COMBAT
Verbeeg are intelligent enough to let other creatures do their dirty work. They are selfish and practical, and usually let their giantish comrades soften up opponents first. Verbeeg then take on the stragglers, using their spears to attack from distance.