The Nephilim
The Nephilim mature much quicker than humans physically, only taking 1/3 the time to reach adulthood. Mentally and emotionally though, they are similar to adolescents. They are selfish and arrogant and many, because of their upbringing, are wicked and heartless. All the Nephilim are male with the exception of one, and many look similar to humans, except the sharp features.
Some though, have other attributes that passed from their fathers. For example, the lone female has a lighter skeletal mass and wings similar to an owl. Another possesses the traits similar to a satyr, because his father preferred a similar form. Yet another has traits similar to a doppelganger. Because of these attributes and their bravery in battle, they receive the title of heroes of old, and men of renown. (Gen. 6:4)
What men do not know, though, is that the Nephilim have a dark secret that they and their fathers have kept from the inhabitants of Eden. Something that will bring a rein of terror upon mankind.