blindsight 30 ft. or 10 ft. while deafened (blind beyond this radius), passive Perception 13
Languages
Undercommon
Traits
Blind Senses. The grimlock can't use its blindsight while deafened and unable to smell.
Keen Hearing and Smell. The grimlock has advantage on Wisdom (Perception) checks that rely on hearing or smell.
Stone Camouflage. The grimlock has advantage on Dexterity (Stealth) checks made to hide in rocky terrain.
Actions
Spiked Bone Club. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d4 + 3) bludgeoning damage plus 2 (1d4) piercing damage.
How many grimlocks for a fight?
A grimlock is worth 50 XP. Using the 2024 encounter budgets (SRD 5.2), this is how many grimlocks fit each difficulty for a party of four characters of the same level. A dash means even one would be over the budget.
Party level
Low
Moderate
High
1st
4
6
8
2nd
8
12
12+
3rd
12
12+
12+
Budgets add up every monster’s XP, so you can swap some for other creatures of the same total. Try other party sizes and mixes in the encounter calculator.
How the grimlock compares at CR 1/4
Against the 31 other challenge 1/4 monsters in the SRD 5.1, the grimlock has more hit points than 5 of them, which makes it one of the frailest at its CR. See every CR 1/4 monster.
Statistic
Grimlock
CR 1/4 average
Armor Class
11
11.8
Hit points
11
15
Best attack bonus
+5
+4
Grimlock 2024 stat block
The 2024 Monster Manual revised the grimlock, and the SRD 5.2 carries the new stat block. What changed:
Its creature type changed from humanoid to aberration.
Speed: 30 ft. → 30 ft., climb 30 ft..
New in its stat block: Bone Cudgel.
Gone from it: Blind Senses, Keen Hearing and Smell, Stone Camouflage and Spiked Bone Club.
Armor Class
11
Hit Points
11 (2d8 + 2)
Speed
30 ft., climb 30 ft.
Challenge
1/4 (50 XP)
STR
DEX
CON
INT
WIS
CHA
16 (+3)
12 (+1)
12 (+1)
9 (-1)
8 (-1)
6 (-2)
Senses
blindsight 30 ft., passive Perception 13
Languages
None
Actions
Bone Cudgel. Melee Attack Roll: +5, reach 5 ft. Hit: 6 (1d6 + 3) Bludgeoning damage plus 2 (1d4) Psychic damage.
