Nessus, the centaur.
Hebe, goddess of Youth. became Hercules' third wife.
The third book in The Wingfeather Saga is "Monster in the Hollows."
Hydra.
Monster high 3: Where there's a wolf there's a way
Fear Squad
The mysterious monster
sock rock chese snail
The Monster Book of Monsters
the entity,a gasy blobby creature,
I am not sure but I believe it comes out in September
cuz it had 3 feet
another foot lol