>>12345103Found Footage/Ghost Hunter Gimmick
Have them both come out absolutely fucking baffled, one or both with a camera of some sorts- have them stumble into the ring schizobabbling about "ectoplasm readings" or some shit with a little device in hand, then have them get btfo'd while screaming about ghosts.
Other wrestlers are spirits, and they can't fucking see them- have them gain awareness and start rolling with and fighting back against the ghosts. Periodically, have them post "proof" photos and videos on social media with the crowd and other wrestlers either edited out, or made partially transparent/a ghostly green or some shit.
You then have a couple ways you can progress the story- maybe one starts being able to 'see the spirits", maybe they have a spat and one starts "summoning" shit to fuck with the other- maybe one of them "dies" and has to wrestle tag with the "living" one as a guardian spirit.
Once you run through all your options, then you can transition out into supernatural gimmick territory