User blog:PercyJacksonfan12/Who's going to return from the dead?

We know that Gaea is recruiting souls from the Underworld to fight for her. Who do you think will be brought back by Gaea and work for the Giants? I think that some of the demigods that died in the last series will be brought back to life to fight Olympus or Gaea will bring Tantalus or Sisyphus back to life to fight for her.