TL;DR Big Mom is afraid of Shanks because he's just too powerful for her. I don't think Big Mom is afraid of Shanks. She was just being very cautious about him, and any other Yonko. She want the giant army, Germa 66 technologies, and all her alliance not because she's afraid with Shanks or any other yonko.
I think Gol D Roger was not a devil fruit user. He has not been shown in combat during the series, so let's look at the two scenarios which have shown a Devil Fruit in context to the Roger Pirates: Some believe Gol D Roger died due to catching an incurable disease due to overusing his DF powers.
Luffy. The Captain of the Strawhat Pirates, Monkey D. Having already been declared as the Fifth Yonko of the Sea, Luffy is closer to the spot than anyone else. He has acquired a bounty of 1.5 billion berries, and, right now, he's at Wano Country with the aim of taking down Kaido, one of the Four Emperors of the Sea.
Shanks got his scar from Blackbeard the time he was with the Roger Pirates or before he created his own crew. At the meeting (ep. 434) with Whitebeard, Shanks said they have been fighting since then, means that Shanks got his scar before he became the captain of Red Hair Pirates.
1-GOL D.
Roger was a legendary pirate who was known as the Pirate King, captain of the Roger Pirates, and owner of the legendary treasure known as “One Piece”. With a bounty was 5,564,800,000 Berries, Roger had the highest bounty in the whole series. No single bounty has ever surpassed his!Zoro dreams of becoming the "World's Strongest Swordsman," and to do that he needs to defeat Dracule Mihawk. Zoro has already faced Mihawk once and that was in East Blue. If they were to fight again, Mihawk would still come out on top because Zoro is still not on that level.
Shanks will also die by the hands of Blackbeard and Blackbeard will be killed by Luffy during the rampage of Gear 5th (Final Gear form) around the end of Raftel arc.
For example,Luffy's is red,Vergo's is purple,Katakuri's is blue… And even that is inconsisted,because in his base form or Gear 2 and 3,Luffy's haki doesn't shine and is simply black.
the simple answer and explanation for the question of the thread: no, Buggy does not have Haki in the sense of he can use it or anything because he is simply not strong enough.
Dragon is yonko level. Dragon is not quite in the same tier as the yonkos, but he has a very powerful right-hand other than Sabo, who is also capable of taking on admirals.
Unsurprisingly, Blackbeard (Kurohige) is also one of the strongest characters in One Piece. Not to mention how much he has contributed to the story. This guy was able to injure Whitebeard with physical punches alone, which confirms that his physical abilities and raw strength are top-notch.
Yes, Mihawk may be a stronger swordsman than Shanks, but in no way can he compare to Shanks as a Pirate and Yonko, laboriously fulfilling agendas that serve not himself, but the greater good of all the One Piece World and the New Age of Piracy.
Luffy: 32-48-62-76 (Gear wise marking, before observation he was at 72) Law: 67. Katakuri: 75. Cracker: 72.
Garp is easily one of the most powerful Marines and one of the strongest characters seen in the series. A testament to his strength is that he was one of the very few people to be considered a rival to the "Pirate King" Gol D. Roger and he was offered the rank of Admiral several times throughtout his life.
Shanks knew Ace was Roger's son when Ace chose to chase blackbeard. Shanks wanted Whitebeard to stop Ace because he knew, not only about Teach, but also about Ace. However, in spite of the fact of knowing that Ace is Roger's son, he wouldn't have come to Marineford, because at the moment, Ace was Whitebeard's son.
Shanks' Full Name – Shanks' full name is… Portgas D. Shanks, so he's Rouge's brother, Ace's uncle and Roger's brother in law!
She was also able to clash equally with her fellow emperor Kaido for two days without being injured. Big Mom also possesses tremendous superhuman durability due to her extremely tough skin, being compared by Sanji and Capone Bege to an iron balloon.
Likely: Shanks just convinced Kaido not to go because in a few years he'd get an even bigger war. Kaido knows Shanks can see the future and believed him. More likely: No, he literally know it because he's able to see possible futures and knows that Luffy staying alive makes a critical difference.
Luffy got a lot stronger since the time he met Whitebeard back at Marineford,but the result of two of them fighting would still be the same. The point is,even if Whitebeard was the weakest Emperor,he would still be able to beat Luffy quite easily.
Luffy is certainly improving though and Teach has shown weaknesses. He's still vulnerable to attacks and he has to be able to physically touch his target to cancel out their powers. Luffy can attack from a distance and attack quickly, but Blackbeard is tough and could figure Luffy's pattern out.
The fact that Shanks is Luffy's friend does not matter to him in the least. He warned Luffy not to get in his way when he agreed to become part of Luffy's crew (and later found out that he was the only crew member). Luffy will have to let Shanks and Zorro fight and just hope that they agree not to kill each other.
She said she would be able to defeat Shanks and Kaido with this power. She said she would be able to defeat Shanks and Kaido with this power. So to conclude, it seems thats Big Mom is the weakest among the Yonko & clearly Shanks will have an upper hand!
The reason why is because Shanks is the symbol of maintaining balance between all the Great Powers. Unlike other yonko Shanks only fights to defend people he cares for and his crew. He is not actively seeking more power like Kaido, Blackbeard and Big Mom.
Shanks alone can't beat kaido ,he might hurt him but result will be same.
Nami is already very powerful, and she has tremendous room to grow. She could possibly gain Prometheus in the future, and wield Haki too. As such, there's absolutely no need for her to eat a Devil Fruit. So he would not eat a devil fruit.
If someone who has already eaten a devil fruit eats another devil fruit, the two devils inside the fruits fight each other leading to the death of the user and birth of the two devil fruits in any part of the world. So if Luffy eats another Devil fruit he will die and hence, he cannot eat another devil fruit.
It's very likely that Usopp will never get a Devil Fruit. Aside from it being unnecessary for his character, it would be very trite and boring to see any more of the crew suddenly gain Devil Fruit abilities. It just furthers the strength of crew seeing them get as far as they are without the need of superhuman powers.
Originally Answered: Will Zoro get a devil fruit? Probably not. Earlier also he has denied of ever eating a devil fruit and to be honest I want him to become the greatest swordsman without any devil fruit.
Oda Sensei clearly hints that Zoro is stronger than Luffy in terms of endurance in the Thriller Bark arc. Even before that, Zoro and Luffy had near equal fights (although they were cut short). Of course Luffy has to fight the main villain throughout, but his power does not match well against a highly skilled swordmen.
No, Gol D. Roger didn't eat the gum-gum fruit. None of this fits with the Roger ate gum-gum fruit “theory”. Not to mention that if Luffy had the same power as the most popular pirate in the One Piece world, someone would have mentioned it in the past 800 chapters.
Usopp has Kenbunshoku Haki (Observation Haki). He awakened it during the Dressrosa Arc, when he was able to see Luffy and Law auras from a great distance through the castle walls. He was able to use his Haki to stop Sugar from attacking them and making everyone forget about them and the revolution.
The answer lies with Garp. Garp doesn't have any devil fruit ability but is insanely strong and has high endurance. Basically, he can destroy a mountain with a punch if he wants.
Nami has Haki – Myth & Fact. Oda explains this is because she “beats up Luffy's spirit”, which is basically the purpose of Haki. However, while it is possible for Nami to learn how to use Kenbunshoku Haki or Busōshoku Haki, or even possess Haōshoku Haki, her ability to injure Luffy is entirely comical.