Similar to an earlier ask, but somewhat different; How would the Kingdoms of Anten (primarily the monarchs, jacks, and aces) feel about the Spirits of Express?
Well, for all four of them, they would most likely find the majority of them to be unsettling to look at, if not downright horrifying. Some might attribute them to demonspawn created by The Fifteenth, others might say they're ghasts created to test their faith of the Arcanas. But perhaps the moment they open their mouths and introduce themselves proper, well...
The Hearts might open up to them fairly quickly, as long as they show no hostility. In fact, they might find themselves very quickly enveloped by their community, joining in their festivities and celebrations. The King and Queen would be very accommodating, though would eventually get curious on why they look like that and where they come from. However, if the less nicer ones are involved, well... expect their Ace to escort them out of the Kingdom as soon as possible.
The Clubs would be incredibly weirded out by any of them, and Fiori would probably humor them for a bit, observing them from a distance, watching their every move, listening to every sound they make. Though, soon enough, the Shuf-LRs, even Fiori herself, might start to invade personal space eventually, and she might just capture one or few or dozen so she may observe them even more closely. But knowing the capacity of a Spirit, well, some might not be able to escape her clutches, some might find it all too easy, and even fewer still might be able to fight back.
The Diamonds are numb to Cornelius' antics, so the moment they spot the Spirits in their area, they would most likely just pass them off as another of Cornelius' weird pranks or experiments. They would be surprisingly casual to them, though possibly a BIT disturbed by their appearances. Queen Amanda and Jagjade might be a bit suspicious of them, while King Cornelius and Princess Carrie would be VERY curious of their presence. Jezebell would... oddly ignore them, giving them no time of day at all, acting as if they don't exist to her.
The Spades... will be a difficult topic. Mortimer would be absolutely horrified by them and hide away from them, probably assuming them to either be his nightmares personified or more tricks that Atrocitus somehow made. King Rondain will find them quite the eyesore and demand them to leave the premises at once, while Atropos would immediately demand Atrocitus to forcibly remove them from her sight immediately. Atrocitus himself gives not a care, and would gladly try to destroy them like any other being he comes across. ...Thanneus also does not care about them.