Sectoloth

"What? No! What’s happening? This isn’t right, this isn’t right!"

- Captain Thomas "Empire" Clarke, succumbing to a Sectoloth's psionic abilities

These small, fragile yugoloths frequently make incursions into the Material Plane in order to find humanoids to drag back to Gehenna and experiment upon. The purpose of these experiments seems to be to find humanoids with above-average psionic abilities, as they're especially attracted to budding psions, telepaths and telekinetics.

They resemble small ultroloths, and are speculated to be closely related to them. Some scientists even believe they are juvenile ultroloths, and that their existence proves yugoloths can reproduce on their own.

Sectoloths have the remarkable ability to establish psionic links to other creatures, which significantly bolster their abilities both in and out of combat. Sectoloths are only known to form links to other sectoloths and to ultroloths, which further implies that the two are of the same species.

Variant: Upright Sectoloth Some sectoloths have humanoid essence fused into them, which gives them a rather distressing upright form and a face with human teeth, but no jaw. Such sectoloths have the following changes: A size of Medium.

A Strength score of 15 (+2).

A hit point maximum of 18 (4d8).

Count as humanoids as well as fiends for the purposes of targeting spells.

Pictured below: a group of Sectoloths noticing a potentially psionic humanoid

Credit: XCOM: Enemy Unknown