Skeleton Warriors

The Skeleton Warriors were monsters who were formed from ancient Dragon teeth by Atlas in The Titan's Curse. In greek mythology, Skeleton Warriors, or Spartoi, were creatures that were created by planting the teeth of a dragon sacred to Ares. Once the teeth were removed from the beast when killed, one must plant them in black soil and plow the land with a breed of ox that was rumored to have extremely thick armor plating. When this was done, from every tooth in the ground, a warrior clad in full Greek armor would burst from the earth. The most effective way to kill them is to get them fighting each other, for in most cases, attacking and killing one would be impossible.(unless you were a child of Hades)

The Titan's Curse
While at New Mexico these Skeleton Monsters attacked Percy, Thalia, Zoë, and Grover and Bianca. When Bianca stabbed him with her Hunter's knife, they erupted into flames leaving a small pile of ash behind. She was only able to destroy it because she was a child of Hades.(but they did not know at the time)

The group, minus Bianca, encountered more skeletons at the Hoover Dam. Percy is seperated from the group after hiding in an elevator that takes him down inside the dam. He then runs into Rachel for the first time and she saves Percy by confusing the skeletons long enough for him to escape back into the elevators. Percy and his friends regroup to try and escape. Thanks to some advise from Athena (in disquise) and two giant angel statues brought to life by Zeus, the angels give the four of them a ride to San Francisco. Later, while at camp, Percy figures out that Nico's father was Hades, after the skeletal warriors appear and Nico unintentionally splits the earth to swallow them up. Nico tells Percy that he hates him for not saving his sister and runs away.



Appearance
The skeletons had gray skin and yellow eyes. They wore gray muscle shirts, camo pants, and combat boots. They had transparent flesh that showed their bones. Their clothes would shift and become whatever was an authority figure wherever they were. They appeared wearing police garb, military outfits and security guard uniforms.