Answer:

hydra

Answer	Crossword Clue
HYDRA	Many-headed monster
HYDRA	One of Hercules' victims
HYDRA	Victim of Hercules

HYDRA	Nine-headed monster
HYDRA	Longest constellation
HYDRA	Target of Hercules's second labor
HYDRA	Many-headed monster of myth
HYDRA	Sea Serpent constellation
HYDRA	Beast that grew two heads every time it lost one
HYDRA	"Two heads are better than one" monster?
HYDRA	Many-headed baddie

HYDRA	Many-headed monster slain by Hercules
HYDRA	Many-headed mythical monster
HYDRA	Subject of a Herculean labor
HYDRA	Monster with a head for multiplication and then some
HYDRA	Monster slain by Hercules
HYDRA	Multiheaded monster
HYDRA	Mythical nine-headed beast
HYDRA	Beast slain by Hercules

HYDRA	Mythical serpent
HYDRA	Mythical multiheaded beast
HYDRA	Herculean opponent
HYDRA	Monster raised by Hera
HYDRA	Multiheaded serpent slain by Hercules
HYDRA	Nine-headed serpent slain by Hercules.
HYDRA	Monster slain by Hercules.
HYDRA	Serpent slain by Hercules

HYDRA	Nine-headed serpent
HYDRA	Serpent killed by Hercules
HYDRA	Southern constellation
HYDRA	Herculean serpent
HYDRA	Nine-headed serpent of myth
HYDRA	Many-headed serpent
HYDRA	Monster in the second labor of Hercules
HYDRA	Victim of Hercules' second labor

HYDRA	Many-headed challenge for Hercules
HYDRA	Freshwater polyp
HYDRA	Serpent with nine heads
HYDRA	Multiheaded beast slain by Hercules
HYDRA	Resilient many-headed monster