Sources
CR
Type
Size
Alignment
Movement

Frost Giant Skeleton

Huge Undead, Lawful Evil

Armor Class 14 (armor scraps)
Hit Points 102 (12d12 + 24)
Speed 40 ft.
STR
23
+6
DEX
9
-1
CON
15
+2
INT
6
-2
WIS
8
-1
CHA
5
-3
Damage Vulnerabilities bludgeoning
Damage Immunities cold, poison
Condition Immunities Exhaustion, Poisoned
Senses darkvision 60 ft., passive Perception 9
Languages understands Giant but can't speak
Challenge 6 (2,300 XP)

Traits

Unusual Nature. The skeleton doesn't require air, food, drink, or sleep.

Actions

Multiattack. The skeleton makes two greataxe attacks.

Greataxe. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit:25 (3d12 + 6) slashing damage.

Freezing Stare. The skeleton targets one creature it can see within 60 feet of it. The target must succeed on a DC 13 Constitution saving throw or take 35 (10d6) cold damage and be paralyzed until the end of its next turn.

Lore

Necromancers can transform the inanimate bones of long-dead frost giants into malevolent juggernauts that love to harm the living.