NPC Vibes
When someone gives very discombobulated and or empty feeling vibes during a social interactions. Interactions like these are comparable to those of older RPG (role play games) like Skyrim.
“Dang bro. She’s givin me mad NPC vibes today.”
NPC-Vibe
Nonplayer characters are a concept that most video game fans are familiar with; filler in a scene, though they may have a part in the script, not primary or even secondary; they are a background fabrication. They don't usually have defined roles or characters, the equivalency of a cardboard cut-out video image. The Nonplayer character vibe is when somebody puts off a feeling reminiscent of the empty, soulless vacuum of a nonplayer character.
I mentioned to a buddy that we were going through a tough time because of some weather conditions; he let me know that they were staying at five-star accommodations while skiing, and they had a hot tub and sauna; that was when I realized he was putting off an NPC-Vibe.