In conclusion , Posidon was one of the Fallen and his 10 sons which were 5 sets of twins were Nephilim of old also as many Nephilim of ancient times were octen recognised as the Hero’s of old before the Great Flood . The Fallen who fathered children of women on earth were condemed to be enchained in Hell until Judgement Day. So Gabriel caused all the Nephilim to make war on each other until almost everyone was killed who was a Nephilim and the remaing few were drowned in the Great Flood and a very small number as in less than 5 were taken into the earth to hide behind rock and metal doors until the waters were gone. Now only the Fallen who never mated with daughters of men are left and the humans taken beneath the earth that we refer to as Grays today.