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"There's a leak... Pissing down on us. Water takes everything apart... down on us. Up from the sewer, that puts us... Water and time could drill a hole in anything."
―Dennis, shortly after Waylon drops through the ceiling.

Dennis is a Variant and a minor antagonist in Outlast: Whistleblower. He briefly appears in a condemned building just above the Vocational Block.


Outlast: Whistleblower

After Waylon Park falls through a roof into the Vocational Block's attic, Dennis can be seen through a paneled wall, conversing with his four personalities over varying subjects. As Waylon continues further, he will hear Dennis discussing a plan to use a "goat" as a sacrifice for Eddie Gluskin, mentioning his hopes to avoid genital mutilation at Gluskin's hands. The father persona hints that they have given numerous men to Gluskin to "cut up" in order to save themselves.

Later, Dennis discovers Waylon and considers him to be a suitable sacrifice, before a resulting chase ensues. Waylon escapes by descending to the lower level, unaware that Gluskin had taken refuge on the third floor. Once Park descends from the fourth floor, Dennis' personalities individually taunt the man and state that Gluskin's "bride" approaches, as he raises the attic's staircase.


Following the incident at Mount Massive, Murkoff's Tactical Division were tasked with re-securing the asylum and were given permission to shoot on sight. Paul Marion referred to the incident as being "100% fatal," leaving it possible that Dennis might have met his end at the hands of Murkoff's PMCs or his fellow inmates.[2]


Dennis is diagnosed with a mental disorder called dissociative identity disorder (DID). He has four expressed identities or personalities; a brother named Timmy, an older brother with a thick speech impediment, their father and their grandfather. All four personalities are active at once and will openly converse with each other, often referring to a life threatening flood. However, it is uncertain whether this flood is a foretelling of a future event or if it had occurred in the past. It is suggested that malingering, or a fabrication on reality is the cause for this delusion.

Physical description

Dennis is a man with brown eyes and no hair, with a pale complexion to boot. The Morphogenic Engine has had very little effect on him, as he lacks any deformities the Engine could have caused, though his face is slightly scarred, possibly due to the electroshock therapy that was conducted on him. His attire includes grayish green patient scrubs and handcuffs around his wrists.



  • Dennis' condition seems to be acknowledged by other Variants, as one Variant that warns Waylon about Dennis refers to him as "they."
  • It is possible that Dennis comes from the Deep South, as the one constant between his different voices is that they all have a stereotypical southern American accent and mannerisms. The grandfather in particular uses phrases that are commonly found within the Deep South, such as angrily comparing the rest of the family to a bundle of "newly whelped possums."
  • It can be speculated that the stuttering brother's personality is Dennis' original. This is due to the verbal abuse he seems to suffer from the other personalities, to which he seems to willfully ignore. The three alternate personalities also each have a key behavioral trait, a factor that is common in real DID cases.
  • Despite being a more notable figure, Dennis does not have a unique character model, but a repurposed one from a common Variant.
  • In the game files, Dennis' name is spelled as "Denis."


  1. Patient Dennis
  2. The Murkoff Account Issue #3, Page 5