Ok, so while it is clearly explained in Jordan Peele's Us (2019) that Adelaide got switched with her tethered counterpart as a child, what about her children? Were they weird just because they were technically half tethered, born to a human father and formerly tethered mom? I guess since the real Adelaide (Red) was stuck with the tethered all those years and forced to have babies with the tethered version of Adelaide's husband, those underground tethered kids were technically half tethered / half human too.
Above ground daughter is Zora, tethered daughter is Umbrae. Was the Zora we see at the end of the movie the same Zora we saw at the beginning of the movie and was she the same Zora that was originally born above ground to Adelaide & Gabe? Please think about the whole discussion of her track abilities and then how poorly she ran when trying to get away from Umbrae.
Above ground son is Jason, tethered son is Pluto. Both these kids were strange, Pluto of course more so, but same question...Is Jason the same kid throughout the movie and has he always lived above ground or was he maybe at some point switched with his tethered version? Points to consider...making the sand castle tunnels, the short disappearance on the beach, understanding the tethered so much quicker than everyone else, making his double walk into the fire, the burns on his double possibly preventing speech.