Before the Flood – According to biblical texts before the Flood (Genesis), the Nephilim (the “fallen”) and the Giborims – “the mighty” on the earth which are also translated as “giants”. Some cite the two terms as interpreting that the giants were the “fallen”, of which existence is contrary to God’s will.

Typically  the origin of zombies are viewed as a cinematic fictional commentary of the mindlessness of the masses and later the great danger of chemical experimentation or a social commentary for the nature of humans in the bring of the Apocalypse.
This is all true but actually the origin is in Haiti from where slaves from West Africa were shipped, thus bringing the Voodoo religion with them. Haiti was a Catholic establishment, but Voodoo practices were present during night and zombification was taboo and yet used for selling slaves. Also, the Bible mentioned one very famous zombie – Lazarus.

The origin and legend can be tracked down all the way to Proto-Indo-European mythology and it has been added and evolved to present day variations.
Werewolf or lycanthrope (from Ancient Greek λυκάνθρωπος lukánthropos (from λύκος lúkos “wolf” and ἄνθρωπος, ánthrōpos “human”) , sometimes refereed as therianthropic hybrid (the ability to shapeshift into an animal), is typically referred to interpretation of the Germanic and Balkan representations in spite of its more ancient origins.