Are those some kind of gaints or they are the gaints?

So, there was no giant? Many people will deny that there ware giants who walked among us. There are many proof that giant helped mankind to survive. It is said that before grate flood people could live upto 1000s years and in 1000s of years think what some human looked like . So, In my thought when great flood came some of the giants survive and due to that we can see what appears to be gaints in above pictures.