The mijjit within humbabas is blended with their aetherial energies, meaning they access it through a combination of physical activities similar to nimusti exercises that blend aetherial arts. This is called takul.

Humbabas have supernatural size, strength, agility, regenerative powers, and constitution because of their mijjit and aetherial energies. Their regenerative powers are triggered by an process similar to photosynthesis: if they are injured or diseased, they can rest in the sun for several days to speed up the healing process. Their constitutional powers allow them to survive on little water for great periods of time.

Takul exercises involve lots of sun, running for miles (about 60 per week), weight-lifting (600 lbs. a day), and eating special foods known as kahrman, which is a combination of cedar resin, water, meat, and special spices. Humbabas have certain takul exercises they favor, depending on their role in their communities. Those who range the deserts seeking water will take on thorny scales over their skin. Those who are warriors often take on lions' paws and bull horns. Those who must patrol the edges of the cedar woods will take on vultures' talons as feet. Those who tend the livestock will have a serpents' head at the end of their tail.

Some rare humbabas choose an abstinent life in order to focus on other pursuits and take on a serpents' head on the end of their phallus. Those who do not are known for their strong libidos which often distract them.

Elder humbabas sometimes alter their bodies to take on a death glare (WIL) or to make their coils sources of hepatoscopy (seeing the future in coiled body parts).

Humbabas have powerful auras that let them take energy from the aether around them. In the fields, they gain power from the sun and the flowers and the summer heat In the rivers, the currents soothe and strengthen them. In the reed-beds, they feel the winds and hear the songs. Amongst lions, they are stronger, greater hunters. In palaces and among the enslaved, they gain honorable power and liberate and empower those around them. In the forests and hills, they are powerful and at home, protected and protectors. And even in the afterlife, they shine.

They also have the powers listed above, including supernatural size, strength, agility, thirst resistance, amorousness, photosynthetic regeneration, and takul-derived features. They can sense the needs of their unique livestock and crops, and they have innate skills at training animals. During the worst of times, their elders can and will give of themselves to help the rest of the community.

Humbabas are stronger during the summer (+3 PRO, ATH, STR) and weaker during the winter (-1 PRO, ATH, STR).

Humababas live in farming communities that are cedar forests in the midst of deserts. They tend the trees, cultivate them, and fell them to provide lumber for surrounding regions or for their own homes within the forests. They raise animals as food and servants. Monkeys are trained as heralds, messengers, and gofers. Birds are court servants for humbaba lords, messengers, and spies. Lions are guards and hunters.

Humbaba communities are usually led by an elder who is the lord. This lord is elected by the rest of the community and serves for life or until recalled by a council of advisers picked by the lord. The lord has a special palace built from living cedars where the throne room is filled with the aroma of cedar resin, which constantly strengthens the lord. Those who directly serve the lord are given special treatment in the community, but most are just tenders of the woods and livestock who live with their extended families.

Humbabas are raised by the community from birth. They are sent to live with the lord at court at the age of 10, where they are trained for three years in arts, literature, poetry, music, animal-tending and training, esoteric arts, takul, cooking, and oratory. Then they are sent back to their farms, where they begin work as tenders of the forest for five years. When they reach their final growth spurt (between 15 and 20), they reach adulthood. If they do not have a final growth spurt, they are sent into the desert sun to trigger it supernaturally. As adults, they are allowed to choose their own path: the court, the forest tending, a special role, or leaving on their own.

Courtship is usually an exchange of foods, gifts, fragrances, and arts. It is a complex series of impressive displays, secret connections, and eventually, a wedding feast or a rejection. The gifts used in each courtship are a "sister gift" of something made by a sibling (or parent or aunt or uncle) of the gift-giver, a personal gift that is unique to each humbaba, eca-flour, work boots, sandals, semi-precious stones, and a special bundle of cedar branches washed in solar aether-imbued water. Variations may exist for humbabas with different body types. If a child is not born within three years of marriage, humbabas often bring on other partners. If children are born into a monogamous couple, the couple often turns non-monogamous once the children are grown. Children of non-monogamous groups are the norm.

Hospitality is sacred among humbabas. Sharing bread and water is sacrosanct.

Humbabas enjoy many festivals and feasts. Midsummer is their biggest communal festival. Harvest, spring, and beltane are also important. Each forest has a first tree festival (celebrating the planting of the first tree), a lion festival (honoring the first lion's birth each year), the lord's birthday, and a festival for anniversaries of major victories or achievements. Through the life of a humbaba, they feast birth, marriage, reaching adulthood and deciding a path, and retirement.

Humbabas live in wooden lodges built from living cedars (with some lumber to adjust certain spots). They have huge open air courtyards in the middle for sun, springs for water and bathing in the courtyards, and massive kitchens and libraries. They value arts and words and esotericists.