Glad they came…? Huh… Vincent offers a nod back to that. Everything works out in the end, then- At least the four of them will actually give Robert answers.
Hearing Robert describe what things have been like on his end with his brain makes sense too, and Vincent finds himself humming a little. Vincent watches Robert curiously as he stops and then- Well hey, that was indeed something that could be answered.

"Yes, one of your two look-alikes within the projection did call themself your Muse, and had something of an angel--Or rather, Seraph--motif, had musical tattoos and was wearing a toga. They said they're the one who helps you write music when you can't remember writing a song, or help you brainstorm and things like that." He has no idea of giving a physical description will help, but might as well share what was seen anyhow.

"The other, the one who indeed later punched Ei after the projection ended, said that he has no name, but as your Muse calls him a Sheriff, that's how I've been referring to him as well at least as a title. He was certainly dressed like a Sheriff, with a stetson, gold star, cowboy boots, the whole look really." And a gun, though Vincent doesn't feel the need to mention that. "The Sheriff said that he's a hero you can hide behind when things get bad, though also said later that the last time he'd been… the one in control you weren't your current height. He also said he's not sure if you even know about him and that you don't talk much, but he considers you a friend. …He also told me to tell you that he's proud of you."
For what or just in general, Vincent doesn't know, but message successfully delivered.

"…I wanted to ask this as well first to make this easier to know how to explain things, but… Robert, do you know what what Dissociative Identity Disorder is?"