Dairon

 is an elf monk working for the Archive of the Cobalt Soul, a library in Zadash. Her monk archetype is the Way of the Cobalt Soul, published in Critical Role: Tal'Dorei Campaign Setting. As an NPC, Dairon is played by Matthew Mercer.

Appearance
When Dairon first appeared, she was hooded and wearing baggy grey pants. All Beauregard could see of her was a thin, muscular figure, neither particularly masculine nor feminine, and dark skin. Dairon later lowered her hood to reveal elvish features and a bald head.

After Archivist Xenoth's failure to find Beauregard and return her to the Archive of the Cobalt Soul in Zadash, Expositor Dairon pursued and found the wayward monk in Trostenwald. After earning Beauregard's respect by easily outclassing her in unarmed combat, Dairon taught Beauregard to use the third-level "Extract Aspects" ability from the Way of the Cobalt Soul archetype for the monk class.

Beauregard
Dairon sees Beau as an apt pupil and believes her rebellious nature is a boon. Beau, on the other hand, seems to have a crush on Dairon.