This person was an alien named Enlil or, El. He was one of Two Brothers who basically ruled Earth for eons...pre Egypt and the flood. Anyways, this alien, compared to us is immortal and so he has different names depending upon what epoch you are talking about here. His Brothers name was Enki also known as Ea but he had other names just as his brother did and so on with the other famous gods in the Sumerian Pantheon.
El was the Anunnaki who at least tired of the incessant human din and challenges associated. Bibles speak of God as being so disappointed in the humans and angry with them that he decided to flood them off the face of the Earth. Well, that is NOT why the Earth flooded. He already knew that Nibiru's approach was going to cause said flood so he used that knowledge, to set the humans up for the fall, pun intended. Either way, it was his brother Enki who saved humanity and directed Noah to build the boat.
BTW, Noah did not bring in 2 of every kind of animal. All he would need (other than for sustenance where you need live animals) is genetic material (saveable) from the various animal types. Now, for that matter I don't see any need for Noah to do the genetic material collection since the aliens probably have on hand every sort and or the ability to make it in their data banks.