I'm looking for a cards that moves a visible non-concealed character into the hidden area. I can't really come up with any answers other than Stepping Between Worlds and Banished to the Anti-Matter Universe, but neither of these are viable in the deck I'm building.

there is astral projection, arie one I think, and a hellfire club card that I can think of off the top of my head

Really, there's not enough information for anyone to know what kind of card you're looking for. You're probably better off going to DocX's search engine, where you can search for "hidden area" while telling it to exclude "Concealed".

Charles McNider<>Dr. Mid-Nite.

It would be easier to help if we knew what kind of deck it was, for what format, and what you wanted to move to the hidden area.

Go to the inhumans, they gots lots. Well they got a few

If you get a comprehensive list of cards that do this, I'd actually be really interested. Just so I'm not completely useless to you, there's rook control, but you'll probably have to team up with checkmate, not that that's a bad thing. Unless, of course, you're lordoflimbo.

Dewoz and Franklin Richards come immediately to mind.

Medallion of Power, if the character starts out hidden, can flick a character back and forth.

Are you talking about your moving your own characters, or an opponents?

Himalayan Enclave or whatever it's called

Himalayan Enclave only works on an Inhuman with Concealed. Once again, we're hampered in helping hippie rob by not knowing what deck he's working with. heh.

Morbius Chair, if the character costs 3 or more.

Or RD52169,Megatron87,MasterVision or CosmicDoom.

My acolytes.

Negative Zone, a team up and rann will do the trick

Doom can move back and forth with Dipomatic Immunity.

Kang - Lord of Limbo (7) and Trevor Fitzroy (5) can move any character to the hidden area (yours or your opponent's).

Luna Maximoff does a stunned character you control with cost 3 or less.

I remember when the designers were worried that moving visible characters across could be too strong...

DTee

Franklin Richards do that trick really easy...
I don't remember if power game, or something like that, a PT for the Hellfire Club do something like that