I picked the second one and designed three:
The first one is nasty looking and more of a deep sea dweller, with a shield made out of a crab and big eyes to pick up the small amount of light that reaches the depths.
The second one is based on a Greek statue, with a technologically advanced shield.
The third one is a guardian with weapons for arms, as if designed to protect Atlantis.
My favourite is the first one so I painted it :)