Echidna

Echidna is a Demonic Beast in Greek mythology appearing in Fate/Grand Order. Within the Proper Human History, Echidna is a mother of monsters from Greek mythology, possessing the body of a snake and head of a human woman. She is the mother of all sorts of monsters from Greek mythology, including Cerberus. Medusa is Echidna's ancestor, with Echidna's father Chrysaor being Medusa's son. As such, Saber Medusa can summon Echidna with her Noble Phantasm Chrysaor (Noble Phantasm). Within the Atlantic Lostbelt, Echidna is a weapon designed and patterned after data from the Proper Human History. It produces great amounts of monsters to bolster the forces of Odysseus. Mash Kyrielight notes that Echidna's appearance resembles Tiamat.