Mafia 21.

and if we follow the logic, someone should have simply been knocked out, because the Barbarian's special ability is called "stun."

If we follow the logic, no one could have gotten close enough to knock her out, as she is completely protected by a squad of guards.
Of all the roles that could "operate" at night, the Barbarian role seems to me to be the most suitable for the description. Neither the Spy nor the Mafia, who "dressed up as townspeople so well that they couldn't be distinguished" or transformed, nor the Guard fit the description of a "person who stands out among the crowd."

before that, you had a different assumption)

Yes. It was a joke, but I don't rule it out; anything is possible.

If Naery is a criminal, then she was sent on a mission today, but it failed. Perhaps she is a Patlach or a Stalker.