The deliverer guarding the entrance of the Underworld. Unlike the rest of her kind, Sanva is not responsible for guiding human souls to their afterlife.

Sanva takes direct orders from the ruler of the Underworld and is charged with keeping peace in the Underworld. She shows no leniency to those restless evil spirits.

Her umbrella is said to have lain at the bottom of the Lethe for thousands of years, during which it has absorbed the grudges of countless souls.

Although technically she is a subordinate of Kyphon, in reality she doesn't take orders from her—her loyalty lies only with Acheronte. She resents Kyphon's laziness and has once made her resentment known to Acheronte.