The Hydra, an ancient serpent-like chthonic water beast that possessed many heads , the poets mention more heads than the vase-painters could paint, and for each head cut off it grew two more, it's poisonous breath and blood were so potent, even its tracks were deadly. The Hydra of Lerna was killed by Hercules as the second of his Twelve Tasks
The Wendigo: malevolent and cannibalistic creatures. Human beings will transform into Wendigos if they perform cannibalism. Once transformed, the individual will become violent and obsessed with eating human flesh. These monsters are the embodiments of gluttony, greed, and excess. They have been classified as giants and upon transformation the human will grow considerably in size. They populate rural and highly forested, mountainous regions.
In Greek mythology, the Chimera (Greek Χίμαιρα (Chímaira); Latin Chimaera) was a monstrous creature of Lycia in Asia Minor, composed of the parts of multiple animals. The Chimera was one of the offspring of Typhon and Echidna and a sibling of such monsters as Cerberus and the Lernaean Hydra.
A dryad is a tree nymph, that is a female spirit of a tree, in Greek mythology. In Greek drys signifies "oak". Thus dryads are specifically the nymphs of oak trees, though the term has come to be used for all tree nymphs in general. They were normally considered to be very shy creatures, except around the goddess Artemis, who was known to be a friend to most nymphs.