Another Original theory by Me(luckyroo20) Enjoy 
Establishing the concept of Devil Fruits
Why can't two people bite a piece of the same DF and get that power?
My take:The Fruit is only a vessel for the "devil spirit" that gives the user there power. As soon as that DF is bitten and swallowed the devil in that DF is transfered to a body which becomes its host. As soon as host dies. That "devil spirit" looks for the nearest "thing". This is the main concept of my theory which is important. Also lets use another example when Pain brought everybody back to life in Naruto there were these spirits looking for bodies. Thats the same way I see DF's only thing when the user die the spirit searches for a DF to go into.
Devil Fruit funnelization process
Most people like to think that the Yami Yami is 100% the reason why BB can eat multiple DF's. I say its 40% the reason.
"Nothing escapes darkness"-Blackbeard
My point is when WB died BB funneled the "devils spirit" into body. Think of it as almost like a surgery. Blackbeard gave the "devil spirit" one place to go and that was his body. The spirit tried to escape to go into another DF but the Yami Yami wouldn't let it. Its the reason why BB needed the blank blanket. I really didn't think he has hiding what he was doing. The blanket was complimentary to his Yami Yami in the process
Vegapunk created the process of funnelization
Why can Weapons eat Devil Fruits?
My take: Weapons don't have mouths they can't eat shit...loll jk. My point is there is ways around eating a DF because the Fruit isn't that important. Whats important is the "devil" whats inside that fruit which grants the user the power
What the process Vegapunk used?
This is obviously hypothetical. But I think Vegapunk is a smart enough man to create inescaple scinetific chambers
Inescapable Chamber + Devil Fruit + Weapon
Step by Step:He recreated the process of eating the DF by having it smashed automatically. When the Devil Fruit is smashed the spirit escapes it. The "devil spirit" or essence then starts to move around looking to find its host. Because it is trapped in the chamber it can not find a DF or a host. The spirit then looks around and it is forced to go into the weapon. That process is called "FUNNELIZATION" a name I made up. Also BB might have used the Blanket to hide this process so people couldn't recreate it.
Also BB is using the Yami Yami to funnel strong Devil Fruits into all of his crew mates. After killing someone with a strong DF..he imediately makes a vortex or a dark funnel on the person who has died and on the other end his crewmate so the "devils spirit" is funneled or transfered into his crewmate rather than seeking a DF again
[video=youtube;xnayvYG_KUo]https://www.youtube.com/watch?v=xnayvYG_KUo[/video]
How Blackbeard stores two devil fruits?
Two Devils+ One body=A fight over the body and you die because of the clash in your body
"Teach body is abnormal"-Marco
Just let me say it now he is not a chimera thats the stupidest cliche ever. Let me explain why because a chimera has three heads its shares one body. Meaning that it doesn't matter which head eats the Devil Fruit there will still be a clash in the body for control leading to death. The reason why I quote Marco is because alot of people dismiss it and give the Yami Yami full credit for BB having multiple DF's. But it could be true but I'm thinking out of the box
"There is more than one"-Zoro
Zoro and Luffy has always has special type of abilities. Luffy hears the voice of all things and Zoro hears the breth of all things. They wouldn't have acknowledged it if it was simply a chimera. The reason why they acknowleged it because they felt another presence within BB.
"Its not like I was careless"-Shanks
This quote clearly shows BB was not weak. Now if we examine Blackbeards past he had a claw weapon. But keep in mind Blackbeard hasn't shown any feats without his DF other than durability and his physical strength. But in my opinion to effectively use claws and hit Shanks you have to be fast and BB is very slow. Keep reading
Blackbeard as a child was seen crying why was that. Was he tormented I would like to think so. But by who?
The Jolly Roger
This is the thing which people looks to deeply into. I don't think Oda's that obvious where he would give BB thread heads because of his Jolly Roger.
Jolly Roger Meaning 1-I have a feeling its represents past,present and future how BB always talks about generations
Jolly Roger Meaning 2-Its forshadowing to BB having 3 devil fruits not 3 heads...
The Concept of Taming Devils from fighting
In my opinion a power or another enitity lives in Blackbeard I wouldn't think of it as a person but a devils spirit. This is the reason why BB was seen crying as a child. Do you guys remember how Shakuku tortured Gaara. Another example is how the ninetails would allow Naruto to merge with the frog. Lets say hypothetically the frog did enter Naruto's body wouldn't it be intimidated by the fox. We'll its the same concept I'm using with BB
The concept of taming devil fruits is simple. The two devil fruit spirits in BB "abnormal" body doesn't fight because they are intimidated not by Blackbeard himself but the thing inside of his body. So the 2 devils in Blackbeards body behave because there is a much darker being inside of his body that they are afraid of so they sit down quietly. Blackbeard turned his childhood curse into a blessing.
The reason why Blackbeard didn't use this power in Marineford is because he has no control over it. Instead it controls his body when it wants too. Blackbeard is also way more tolerant to pain because he shares it with this other entity. Just think about it the way Shanks explained Blackbeard it really hinted at BB being fairly powerful. So far he has no feats which shows he can successfully use claws because atleast some sort of speed would be required to catch someone with those claws..just think of wolverine does BB seem like that too you. And thats why he uses this spirit thing.
Also notice how we never saw Ace vs BB fight finish I think its a reason for that. Nothing is just coincidence with Oda
We are the Marshall D's theory(Ancestors)
Monkey D family
Gol D family
Marshall D family
Portugas D family
Jaguar D family
Short theory:These are some of the famalies that made up the ancient kingdom. All the D's lived in peace but the Marshall D's had there own agenda. They were selfish and they represented evil in the ancient Kingdom. They were the betrayers of the ancient kingdom because of there own evil ways
Sounds familar?
I usually don't like reincarnations but I feel Blackbeard is a representantion of how the Marshall D's were back in the day pure evil. If we think of all the stuff BB has done so far it makes sense..because he was the one that killed thatch and started the WB war all by himself. If that doesn't show you evilness I don't no what will and thats what makes BB a true pirate because the Marshall D were the same
My point with all this family crap is BB might have been born with this evil entity in his body. The BB we see now is only capitalizing off of a birth deffect and using it to his advantage.
Sidenote:I know alot of this theory is farfetched and the Yami Yami theory could be 100% the reason why BB can have multiple devil fruits. But that has been done a bunch of times in different theories. I tried to approach this is a more unique way according to Blackbeard body being abnormal and giving him a story line I made up...
Tell me what you think guys and add to the theory
You must be registered for see images
Establishing the concept of Devil Fruits
Why can't two people bite a piece of the same DF and get that power?
You must be registered for see images
You must be registered for see images
My take:The Fruit is only a vessel for the "devil spirit" that gives the user there power. As soon as that DF is bitten and swallowed the devil in that DF is transfered to a body which becomes its host. As soon as host dies. That "devil spirit" looks for the nearest "thing". This is the main concept of my theory which is important. Also lets use another example when Pain brought everybody back to life in Naruto there were these spirits looking for bodies. Thats the same way I see DF's only thing when the user die the spirit searches for a DF to go into.
Devil Fruit funnelization process
Most people like to think that the Yami Yami is 100% the reason why BB can eat multiple DF's. I say its 40% the reason.
"Nothing escapes darkness"-Blackbeard
My point is when WB died BB funneled the "devils spirit" into body. Think of it as almost like a surgery. Blackbeard gave the "devil spirit" one place to go and that was his body. The spirit tried to escape to go into another DF but the Yami Yami wouldn't let it. Its the reason why BB needed the blank blanket. I really didn't think he has hiding what he was doing. The blanket was complimentary to his Yami Yami in the process
Vegapunk created the process of funnelization
You must be registered for see images
Why can Weapons eat Devil Fruits?
My take: Weapons don't have mouths they can't eat shit...loll jk. My point is there is ways around eating a DF because the Fruit isn't that important. Whats important is the "devil" whats inside that fruit which grants the user the power
What the process Vegapunk used?
This is obviously hypothetical. But I think Vegapunk is a smart enough man to create inescaple scinetific chambers
Inescapable Chamber + Devil Fruit + Weapon
Step by Step:He recreated the process of eating the DF by having it smashed automatically. When the Devil Fruit is smashed the spirit escapes it. The "devil spirit" or essence then starts to move around looking to find its host. Because it is trapped in the chamber it can not find a DF or a host. The spirit then looks around and it is forced to go into the weapon. That process is called "FUNNELIZATION" a name I made up. Also BB might have used the Blanket to hide this process so people couldn't recreate it.
Also BB is using the Yami Yami to funnel strong Devil Fruits into all of his crew mates. After killing someone with a strong DF..he imediately makes a vortex or a dark funnel on the person who has died and on the other end his crewmate so the "devils spirit" is funneled or transfered into his crewmate rather than seeking a DF again
[video=youtube;xnayvYG_KUo]https://www.youtube.com/watch?v=xnayvYG_KUo[/video]
How Blackbeard stores two devil fruits?
Two Devils+ One body=A fight over the body and you die because of the clash in your body
"Teach body is abnormal"-Marco
You must be registered for see images
Just let me say it now he is not a chimera thats the stupidest cliche ever. Let me explain why because a chimera has three heads its shares one body. Meaning that it doesn't matter which head eats the Devil Fruit there will still be a clash in the body for control leading to death. The reason why I quote Marco is because alot of people dismiss it and give the Yami Yami full credit for BB having multiple DF's. But it could be true but I'm thinking out of the box
"There is more than one"-Zoro
Zoro and Luffy has always has special type of abilities. Luffy hears the voice of all things and Zoro hears the breth of all things. They wouldn't have acknowledged it if it was simply a chimera. The reason why they acknowleged it because they felt another presence within BB.
You must be registered for see images
"Its not like I was careless"-Shanks
You must be registered for see images
This quote clearly shows BB was not weak. Now if we examine Blackbeards past he had a claw weapon. But keep in mind Blackbeard hasn't shown any feats without his DF other than durability and his physical strength. But in my opinion to effectively use claws and hit Shanks you have to be fast and BB is very slow. Keep reading
Blackbeard as a child was seen crying why was that. Was he tormented I would like to think so. But by who?
You must be registered for see images
The Jolly Roger
This is the thing which people looks to deeply into. I don't think Oda's that obvious where he would give BB thread heads because of his Jolly Roger.
Jolly Roger Meaning 1-I have a feeling its represents past,present and future how BB always talks about generations
Jolly Roger Meaning 2-Its forshadowing to BB having 3 devil fruits not 3 heads...
The Concept of Taming Devils from fighting
In my opinion a power or another enitity lives in Blackbeard I wouldn't think of it as a person but a devils spirit. This is the reason why BB was seen crying as a child. Do you guys remember how Shakuku tortured Gaara. Another example is how the ninetails would allow Naruto to merge with the frog. Lets say hypothetically the frog did enter Naruto's body wouldn't it be intimidated by the fox. We'll its the same concept I'm using with BB
The concept of taming devil fruits is simple. The two devil fruit spirits in BB "abnormal" body doesn't fight because they are intimidated not by Blackbeard himself but the thing inside of his body. So the 2 devils in Blackbeards body behave because there is a much darker being inside of his body that they are afraid of so they sit down quietly. Blackbeard turned his childhood curse into a blessing.
The reason why Blackbeard didn't use this power in Marineford is because he has no control over it. Instead it controls his body when it wants too. Blackbeard is also way more tolerant to pain because he shares it with this other entity. Just think about it the way Shanks explained Blackbeard it really hinted at BB being fairly powerful. So far he has no feats which shows he can successfully use claws because atleast some sort of speed would be required to catch someone with those claws..just think of wolverine does BB seem like that too you. And thats why he uses this spirit thing.
Also notice how we never saw Ace vs BB fight finish I think its a reason for that. Nothing is just coincidence with Oda
We are the Marshall D's theory(Ancestors)
Monkey D family
Gol D family
Marshall D family
Portugas D family
Jaguar D family
Short theory:These are some of the famalies that made up the ancient kingdom. All the D's lived in peace but the Marshall D's had there own agenda. They were selfish and they represented evil in the ancient Kingdom. They were the betrayers of the ancient kingdom because of there own evil ways
Sounds familar?
I usually don't like reincarnations but I feel Blackbeard is a representantion of how the Marshall D's were back in the day pure evil. If we think of all the stuff BB has done so far it makes sense..because he was the one that killed thatch and started the WB war all by himself. If that doesn't show you evilness I don't no what will and thats what makes BB a true pirate because the Marshall D were the same
My point with all this family crap is BB might have been born with this evil entity in his body. The BB we see now is only capitalizing off of a birth deffect and using it to his advantage.
Sidenote:I know alot of this theory is farfetched and the Yami Yami theory could be 100% the reason why BB can have multiple devil fruits. But that has been done a bunch of times in different theories. I tried to approach this is a more unique way according to Blackbeard body being abnormal and giving him a story line I made up...