Unknown creatures and gods from Greek Mythology

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Across
  1. 2. A supernatural woman with 6 snakelike arms and heads on the end that ate everything within reach
  2. 5. A giant worm-like thing that lives under a rock opposite of Scylla and has lots of teeth and eats sailors
  3. 6. God of stupidity
Down
  1. 1. Mother monster of lots of monsters in Greek myths
  2. 3. Goddess of luck and fortune
  3. 4. Goddess of misery and depression