"The Proprietors" is a fan-made name to refer to the current owners and managers of the Petscop YouTube channel. The ownership was announced that it was passed from Paul to them on December 25, 2017. It can be inferred that this group of people does not include Paul, as they had to coerce Paul to continue playing Petscop, and refer to him separately.
It is possible that they were the writers of the censorship message in Petscop 7 as no other character refers to themselves as "we".
If one of the Proprietors recieved Rainer's gift, then they could be whoever the blue text from the Frozen House represents.
One of the proprietors could be the friend Paul mentioned in his early videos.
In Petscop 14, Paul mentions "the family Youtube". This could mean the proprietors are Paul's family, there is another channel owned by Paul's family, or a separate channel made for family (and possibly the proprietors).
|Amber • Pen • Randice • Roneth • Toneth • Wavey|
|Care • Michael Hammond • Tiara/Belle|
|Player character • The Gift Plane Staff • "I" • Marvin • Newmaker • Quitter • Pyramid Head • Shadow Monster Man • TOOL • Jill • "You" (As Mentioned in Game) • Wife|
|Paul • "You" (As Mentioned by Narrator) • Rainer • Proprietors|