Building a good monster starts with defining their Nature. While the book has plenty of examples, I wanted to provide a more comprehensive list. The below is the start, but I’m looking for suggestions, particularly for some of the thinner letters (I’m looking at you: Q).
Purposeful Nature: For monsters that serve a particular purpose or where you simply want a little more flavor, combine the below with specific people places or things. Guarding the Three-Eyed Devil, Devouring the Stars, Collecting Bones, etc.
A
Ambushing
Avenging
Assaulting
B
Burrowing
Burning
Blinding
Banishing
Biting
Burying
C
Calculating
Creeping
Collecting
Calling
Cloning
Crushing
Coveting
Commanding
Cursing
Cheating
D
Draining
Devouring
Disguising
Digging
Defiling
Destroying
Decaying
E
Eating
Enslaving
Escaping
F
Freezing
Flying
Feasting
G
Guarding
Grinding
Grappling
H
Hypnotizing
Haunting
Hiding
Hoarding
Hunting
I
Impaling
Infecting
J
Jumping
Joking
K
Killing
L
Lying
Lurking
Legerdemain
M
Mutating
Marauding
Multiplying
Murdering
N
Nesting
O
P
Polymorphing
Punishing
Pursuing
Punching
Poisoning
Pulling
Planeshifting
Q
R
Riddling
Rusting
Raiding
Running
Rotting
Rending
Raising
Returning
S
Strangling
Shambling
Scheming
Spawning
Slaying
Swarming
Serving
Summoning
Shapeshifting
Swimming
Spilling Blood
Scrying
T
Teleporting
Tracking
Torturing
Terrorizing
Trapping
Throwing
Thrashing
Tunneling
U
Uprooting
Unlocking
V
Vanishing
Vanquishing
W
Warping
Watching
Wandering
Whispering
Worshipping
X
Y
Z
Zealous