Conflicting sisters Picture

Greek mythology; Sphinx and Hydra.
Like Cerberos, Orthros and Chimera they are children of Echidna and Typhon - it was fun to draw a battle of these silblings.
Who will win? I think Hydra is in charge. She's got some more eyes...and teeth
Echidna: Mother of Monsters
Mythos Rear chart
Conflicting sisters
Echidna
Phorcys