Well, I had just started a server. Support_Renderman nor prepper was on in RTB or the server start menu thing where you choose addons to run on the server. Anyways, I just loaded a map, and I was running around till I saw what looks exactly like the renderman in the mod, except without a light or anything. He had the creepy wide grin as his face, until I walked up to him and it turned to the prepper face. Natural, I had a jump and he dissapeared, and I shut down the server.
Some kind of new feature, or what? It was plain daylight in the server, and the place where I saw him. (Though, I was alone.)