High Power Races: Thri-Kreen

Along with the aarakocra, the thri-kreen are one of my favorite non-standard races to play. Unique and alien, thri-kreen provide for unusual roleplaying opportunities and unusual flavor at the table. The challenge? Thri-kreen are a powerful PC race (see Behind the Development below). Converting them to a standard PC race while maintaining their flavor and popular, race-specific powers was a challenge and even with this conversion DMs should consider before allowing them in their campaigns. If used, DMs and players should play up the thri-kreen’s social disadvantages as much as possible, including limited communication and insight into humanoid motivations and feelings. Though I follow Monte Cook’s design rule that “fluff does not balance crunch”, if you have decided that thri-kreen are usable in your campaign, you can use these disadvantages to build interesting stories and social¬†interactions while balancing some of their physical benefits. Remember that 5th edition emphasizes combat, exploration,¬†and social interactions in equal balance.


Thri-kreen are nomadic, insectoid humanoids typically found in deserts and savannah. They communicate with a species-specific combination of clicks, body movements, and antennae waves, though it is suspected that pheromonal communication allows for more subtlety than most humanoids can decipher. Though non-thri-kreen can learn to understand the basics of thri-kreen communication, it’s impossible to speak. Most thri-kreen understand Common with the same level of understanding. Unless a thri-kreen has spent significant time with non-insectoid humanoids, they make all Insight and Persuasion checks at disadvantage. The same is true of mammalian humanoids when dealing with thri-kreen.