Sources
CR
Type
Size
Alignment
Movement

Thri-kreen Gladiator

Medium Monstrosity, Any alignment

Armor Class 17 (natural armor)
Hit Points 142 (19d8 + 57)
Speed 30 ft.
STR
18
+4
DEX
18
+4
CON
16
+3
INT
10
+0
WIS
15
+2
CHA
11
+0
Saving Throws STR +7, DEX +7, WIS +5
Skills Acrobatics +7, Athletics +7, Perception +5
Condition Immunities Frightened
Senses darkvision 60 ft., passive Perception 15
Languages telepathy 60 ft., Thri-kreen
Challenge 7 (2,900 XP)

Actions

Multiattack. The thri-kreen makes two Gythka attacks and one Chatkcha attack.

Gythka. Melee Weapon Attack: +7 to hit (with advantage if the thri-kreen is missing any hit points), reach 5 ft., one target. Hit:13 (2d8 + 4) slashing damage.

Chatkcha. Ranged Weapon Attack: +7 to hit (with advantage if the thri-kreen is missing any hit points), range 30/120 ft., one target. Hit:7 (1d6 + 4) slashing damage.

Bonus Actions

Leap. The thri-kreen leaps up to 20 feet in any direction, provided its speed isn't 0.

Reactions

Parry. The thri-kreen adds 3 to its AC against one melee attack that would hit it. To do so, the thri-kreen must see the attacker and be wielding a melee weapon.

Lore

Thri-kreen gladiators relish opportunities to test their mettle in combat and often paint their carapaces with the blood of their enemies.