system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel][Conan the Barbarian] With the increasing number of Hyborian Age threats that keep popping up in modern day is there any expert or go-to person in the Marvel Universe for stuff from that era? Like if Thulsa Doom or some other era specific threat shows up who do you call?

It seems to me like the "Hyborian problem" is escalating and more and more high end threats from that era are surfacing, and it's a bit disconnected from the rest of Marvel earth's timeline so specialized knowledge of the magic, monsters, and people of the era seems rare even for guys like Dr. Doom or Dr. Strange. Just pulling Conan himself into it seems like an unreliable answer given his temperament and his reluctance to spend too much time in the far future, so my question is who is the expert on this stuff? When the Hyborian age comes calling which Avenger or superteam is best as a first responder?
gpt
Well. You've got Selene of the Hellfire Club. She's a lot older than you might expect. But she is, if anything, probably going to be much more trouble to work with than Conan. Also Man-Thing's buddy Dakimh the Enchanter, and his apprentice Jennifer Kale alias Zhered-Na. 

Apart from that you might have to turn to Namor and Atlantis' archives, or ask Thor if he's got any relatives who were around then and left some heirlooms for just such an occasion.