Like his brother, he resembled a gigantic earth elemental, like a living mountain. He could also burrow through the ground, merging with earth and stones and moving through them without disturbing the ground. He could even manifest himself only as a face made of stone in a cavernous wall.
Ogrémoch considered Entemoch an enemy, but Entemoch's feelings toward his twin brother were unknown.
It is unknown what kinds of races and creatures worshiped Entemoch, but the svirfneblin priests of Blingdenstone knew ways and rituals to summon him. Entemoch appeared to those deep gnomes a thousand of years before the mid–14th century DR. This ritual involved placing green gemstones in a circle and breaking them apart.