Also found this cool theory on King and Queen from Reddit.
When looking at this absolute unit and his title we notice five distinct features:
- He has black feather wings
- He wears a suit resembling that of Impel Dow
- He likes torture
- His title and the flame behind his head give away that he most likely is fire themed
- He is also a swordsma
From the second and the third feature we can derive he probably has a connection to Impel Down. Maybe he has worked there in the past, perhaps he even was the head jailer at one point.What is important here is that Impel Down has this whole Dante's Inferno and christian Hell theme to it.
His wings might be a reference to his time there as well, however I don't think that is entirely the case. The black wings that Magellan and the other jailers wear are bat-like wings indicating those of a devil/demon. King's wings are feathered and I think they play a key role in discovering what type of fruit he has.
Going from the assumption that King has a Zoan-type fruit and that his wings indicate what it is we can narrow down our options. What has black feathered wings and is an animal or perhaps a mythical being?
Now we also shouldn't forget he has a fire theme going for him. This rules out any being that doesn't make use of fire, like a raven, a crow, or a pegasus.
Some might say he has an Ifrit fruit, but that doesnt have wings and doesn't really go well the theme. Marco already has the phoenix fruit and western black dragons don't have feathered wings so that leaves one option that both has black feathered wings AND a fire/hell theme:
King has the Mythical Zoan angel angel fruit, Model: Lucifer
Lucifer, the Fallen Angel
Lucifer, the Fallen Angel King. Think about it. It goes very well with the whole Impel Down theme and both the fact that devil fruits are called devil fruits and that Sengoku has a similar religious themed fruit doesn't rule it out of the realm of possiblities.
I haven't talked about his sword yet, but I think it's unrelated to his fruit ability. He is in Wano after all and probably received his sword there which is also very likely to be a renowned named sword.
When looking at Queen he has 3 things that are of notice:
- He is an okama
- He has the title "the Plague"
- He seems to be working on some device
Him being an okama probably hints to a some relationship to the okama community. He might have had a past connection with Ivan as a student/mentor, lovers or rivals relationship. Because of this he likely has some mastery over okama/newkama kenpo.
Now for his actual ability I think the biggest hint is both his titles in his case. "The Plague" and "Queen".
This however can mean multiple things. Most people think about disease. While that might definitely play a role in some of his capabalities, I don't think it solely defines his fruit.
Plague might also refer to an insect plague, causing famine. Locust are obviously the first insect that come to mind, however something struck me as I was thinking about insects. Queen is called "Queen". I think that is an obvious reference to a special indiviual insect in a hive; the insect Queen. What queen that might be? An ant queen, bee queen or a termite queen? Those insects don't cause famines.
However, notice the device that Queen was working on? That might represent industrialism. Notice how the factories in Wano look like termite mounds? Queen might be in charge of all industry in Wano, with the slaves being his worker termites and the guards being his soldier termites.
This industrialism is what pollutes the surroundings, poisoning the flora and fauna and bringing disease and famine to Kuri. This might actually have earned him his title "the Plague".
Thus my theory is that Queen has eaten the Elite Zoan-type bug bug fruit, Model: Termite Quee
Yep, that big thing is the quee
What I mean with "Elite/Royal Zoan-type" is that the model of Queen probably means a power up from lower ranks of the same bug. Of course this only applies to insects really, but we haven't really seen many insect zoans.
I think this fruit allows him to create these giant termite mounds rapidly, and perhaps it allows him to mind control his Hive, or even others. Remember how he was in charge of breaking the wills of the prisoners like Kidd and Luffy?