Lamia

Lamia can only be found in the Underground Desert in Hardmode. When found in regular underground deserts, it has pale blonde hair and drops the Sun Mask. If the desert is tainted with Corruption or Crimson, it will spawn the alternate variant instead.

Trivia
In Greek mythology, Lamia was a queen of Libya who was turned into a child-devouring monster by Hera, the Goddess of Women and Marriage.

Lamia