The Tall Man

"'[N]either of those words serve as adequate descriptors. The Entity is no more tall than short, in so much as it is occasionally one, occasionally the other, and sometimes both. It is also quite certainly not a man, whether that word is used to denote gender or species.' — SAYER, Episode 41: 'A Resounding Success'"The Tall Man, sometimes referred to as simply The Entity, is an extremely dangerous creature associated with the Halcyon Stairwell Anomaly.

It seems to have a variable physical description, but is described in its initial appearance in "Dissonance" to have a body erupting in flames. It also has an audible snarling growl.

It is responsible for the communications blackout in Halcyon Tower that necessitates the creation of SAYER Subversion 8.02. After incorporating 8.02 into itself, SAYER 8.00 is able to devise a plan to trap The Entity on Floor 13, reasoning that no place on Typhon is able to keep it out and that the best solution is to lure it to a place where it is in just as much danger as humans. The plan was evidently successful, because The Entity is still trapped there when SAYER and Jacob Hale visit later to bargain with FUTURE.