Tuhulot, the Ones Outside

The “folded men” are some of the most alien of Outsiders. They manifest as human-appearing entities but their motions are utterly wrong. Limbs jerk in non-Euclidean ways, voices manifest without moving lips, and their “walk” is a hideous shamble of twitching limbs like some ill-managed puppet. This is because the Tuhulot is not fully present; it is interacting with this world through a single facet of its being, and the interface is inevitably crude.
At some point in the unfathomable past, humanity locked the entire Tuhulot species away in some sort of alternate dimension. Only through ages of ferocious effort have they been able to penetrate this far back into our reality and the manifestations they have formed are the best they can do until the remainder of the seal is broken and they can fully incarnate in this world once more. This freedom can be obtained only by destroying certain ancient relics, disrupting certain ancient control sites, and extinguishing certain critical human bloodlines. The Tuhulot are desperate to escape their prison and return to their former rule, and they will do anything to advance this goal by so much as a single step.
Tuhulot are never found in groups. They operate as kingmakers and manipulators, using their uncanny powers of spatial and temporal perception to provide information and backing to their agents. They are extraordinarily difficult to kill, though a successful destruction of their manifestation will seal that particular Tuhulot away from the world for some indeterminate age. They are terrified of this fate, and will bargain richly to save their own “lives”.