Old Man (106)
Location: Heavy Containment Zone
(Some acid found in his chamber can be sold for $500 by Foundation team, 3 vials per person)
Scarlet Entities (354)
Location: Heavy Containment - Scarlet Lake
(Just a wave-type zombie)
Shadow Child (017)
Location: Heavy Containment
(Being in the same room as it will deal 10 damage to you)
Shy Guy (096)
Location: Heavy Containment
(A picture of 096 can be sold by a CI in the Site Directors Office for $2000, a 1/2 chance you see the face during this process)
The Mask (035)
Location: Heavy Containment Zone
(Can sell the mask as a CI in Room 98 for $800, 1/3 chance to be tempted to put the mask on)
The Vampire
Location: Heavy Containment
(Can sell Vampire Blood as either team for $1000 in Room 98, Vampire Blood is dropped after The Vampire dies)