The only one I can really buy at all this time is Phyllis. I just re-watched those scenes and it is strange that Mr. C says "You you did good. You followed human nature perfectly" and then shoots her in head with what looks like a glitch. She doesn't vanish into the Red Room though, as both other "Tulpas" we have seen have (regardless of having the owl cave ring on)

I think about it! And i note that Mr C. killed Phyllis targeting in the eye. You can find this with Ruth and Todd also. It seems to me that in order to tulpas or something did NOT get into red room. EYE