In ASH on KoLmafia r26118, $monster[ancient protector spirit] has an id = 0 and name = null. This is the same id and name associated with $monster[none].
Code:
> ash $monster[ancient protector spirit]
Returned: ancient protector spirit
name =>
id => 0
base_hp => 110
base_attack => 188
base_defense => 157
raw_hp => 80
raw_attack => 158
raw_defense => 145
base_initiative => 20
raw_initiative => 10
attack_element => none
defense_element => none
physical_resistance => 100
min_meat => 0
max_meat => 0
min_sprinkles => 0
max_sprinkles => 0
base_mainstat_exp => 24.75
phylum => undead
poison => none
boss => false
copyable => true
image => protspirit.gif
images => aggregate boolean [string]
protspirit.gif => true
sub_types => aggregate boolean [string]
ghost => true
random_modifiers => aggregate boolean [string]
manuel_name => ancient protector spirit
wiki_name => ancient protector spirit
attributes => HP: 80 Def: 145 Atk: 158 Init: 10 Phys: 100 P: undead GHOST
> ash $monster[none]
Returned: none
name =>
id => 0
base_hp => 0
base_attack => 0
base_defense => 0
raw_hp => 0
raw_attack => 0
raw_defense => 0
base_initiative => 0
raw_initiative => 0
attack_element => none
defense_element => none
physical_resistance => 0
min_meat => 0
max_meat => 0
min_sprinkles => 0
max_sprinkles => 0
base_mainstat_exp => 0.0
phylum => none
poison => none
boss => false
copyable => false
image =>
images => aggregate boolean [string]
sub_types => aggregate boolean [string]
random_modifiers => aggregate boolean [string]
manuel_name =>
wiki_name =>
attributes =>