Tethys

Tethys is a water Titaness, she is shown having a blue body composed of ice, long white hair and webbed hands; she is the most humanoid of the featured titans in her original form. Her form is later altered by Hera to appear to be made completely of water (so that physical attacks do her no harm), have a mermaid like fin that sprouts into octopus tentacles instead of legs and a more purple color as apposed to her original blue. She is shown to be the only one of the Titans to accept her new form right away, smiling after examining her new-found powers. She meets her end when she runs into Mnemosyne, causing them both to fall into Tartarus.