Book of Giants in the context of "Watcher (angel)"

Humbaba (Ḫumbaba; 𒄷𒌝𒁀𒁀, Ḫumbāba, with an optional determinative 𒀭), originally known as Ḫuwawa in Sumerian (𒄷𒉿𒉿, Ḫuwāwa), was a figure in Mesopotamian mythology. The origin and meaning of his name are unknown. He was portrayed as an anthropomorphic figure comparable to an ogre or giant. He is best known from Sumerian and Akkadian narratives focused on the hero Gilgamesh, including short compositions belonging to the curriculum of scribal schools, various versions of the Epic of Gilgamesh, and several Hurrian and Hittite adaptations. He is invariably portrayed as the inhabitant or guardian of the cedar forest, to which Gilgamesh ventures with his companion Enkidu. The subsequent encounter leads to the death of Humbaba, which provokes the anger of the gods. Humbaba is also attested in other works of Mesopotamian literature. Multiple depictions of him have also been identified, including combat scenes and apotropaic clay heads.

It has been suggested that the iconography of Humbaba influenced depictions of the gorgons in Greece, in particular scenes of Perseus slaying Medusa with the help of Athena. A late derivative of Humbaba also seems to be found in both Jewish and Manichaean versions of the Book of Giants, where one of the eponymous beings is referred to as Ḥôbabiš, Ḥôbabis or Ḥōbāīš. While it is agreed the name is derived from his own, the context in which it appears shows no similarity to known myths involving him. Traces of Ḥôbabiš have also been identified in a number of later works belonging to Islamic tradition, such as religious polemics. A number of connections have also been proposed between Humbaba and figures such as Kombabos from the works of Lucian or biblical Hobab, but they are not regarded as plausible.