Argus
Atlantean
Briareus
Brobdingnagian
Cerberus
Charybdis
Cyclopean
Cyclops
Dracula
Echidna
Frankenstein
Gargantuan
Gorgon
Harpy
Herculean
Homeric
Hydra
Loch Ness monster
Mafioso
Medusa
Minotaur
Pegasus
Python
Scylla
Sphinx
Talos
Typhon
Wolf-man
Young Turk
abortion
abysmal
amplitudinous
ape-man
astronomic
astronomical
awesome
baboon
bag
beast
beldam
berserk
berserker
blemish
blot
bogey
bogeyman
bomber
boundless
brute
bugaboo
anomaly
fetus
foetus
unusual person
monstrous
monstrously
being
cat
demon
dragon
enemy
fellow
fish
ghost
giant
horror
insect
machine
one
vampire
warrior
wolf