- - Firebrand in the video "DEATHTRAPEXODUS".
The Collective is a mysterious group of entities who manipulate the world through mortal vessels. Each member has been converted into a powerful being by Slender Man, but exists as its servant, pacified and controlled like a puppet by a puppeteer.
- Administrator: Also known as the Slender Man, he is the leader of The Collective.
- Observer: The person wearing glasses, he is the most well-known member, his vessel was confirmed to be Kevin Haas.
- Deadhead: The person wearing a skull mask and a hoodie. Most likely followed Sebastian and is possibly following Karl Maxwell.
- Cursor: The only known female member, she has what appears to be duck tape on her eyes which make two X-es. Her vessel was confirmed to be Mary Asher.
- Mr. Scars: Named after the scars on his body, it was revealed in the video "Milo's Tape" that his vessel is Milo Asher.
- Persolus: Persolus is Latin for "quite alone". It is likely that his vessel is Karl Maxwell.
- Swain: The person wearing the theater mask. (Adam Rosner confirmed on his OOG Tumblr that his vessel is Sebastian.)
- Firebrand: The figure with pinhole eyes. In the video "The Live Stream Incident" it is revealed that Firebrand is Noah Maxwell from an alternate timeline.