Round 1: Kaido
Round 2 is much more fun
Let's go over his feats first:
Rayquaza
Energy Projection
Strength
Speed
Durability
Misc
Keep in mind, this is merely
base Rayquaza
Mega Rayquaza
Dragon Ascent
Energy Projection
Strength
Speed
Durability
Misc
Emerald
Omega Ruby/Alpha Sapphire
Mystery Dungeon
Now for Kaido:
Superhuman Physical Characteristics,
Large Size (Type 0. Kaidou is 7.1 meters tall. Type 2 in Dragon Form. Type 3 with
Flame Dragon Form),
Haki (Advanced Haōshoku, Advanced Kenbunshoku, Advanced Busōshoku),
Expert Kanabō Wielder,
Transformation and
Natural Weaponry (Into a full serpentine Azure Dragon and a human-dragon hybrid),
Flight,
Weather Manipulation, and
Telekinesis (As a dragon, Kaidou is capable of moving through the air by creating special clouds called "Flame Clouds" and using them as footholds. These clouds can also be used to lift other objects, and they are even capable of lifting an island out of the sea),
Enhanced Senses (Zoan users gain the senses of their respective animals),
Breath Attack,
Fire Manipulation (Can generate fire blasts from his mouth),
Electricity Manipulation (Can generate lightning with his Thunder Bagua, Vajra Arrow or by roaring in Zoan Form),
Air Manipulation (Can create sharp wind blades with his breath and can throw flying strikes by striking the air with his kanabo), Limited
Danmaku with Tatsumaki and Kaifu (
Those caught in his Tatsumaki are cut by dozens of ranged slashes composed in a constant swirling tornado. His Tatsumaki Kaifu releases several sharp blades of wind in all directions),
Regeneration (Mid-Low. Able to heal stab wounds in a short period of time),
Empowerment (When drunk from alcohol he enters a state called Shuron Hakke, which greatly strengthens his Haki and causes him to change into various modes based on his drunken mood swings), Limited
Technique Mimicry (In his Nusubito Jogo mode, he can mimic his opponent's fighting style to an extent, but has so far only been shown to replicate
Luffy's ability to change his attack's trajectory at will),
Flame Aura (Via Kaen Daiko; Kaido was confident that the heat produced would melt
Gear 5th Luffy's Bajrang Gun into nothing if it came to touch it),
Statistics Amplification (Via "Super Hybrid" by increasing the muscle mass of his body to enhance his strength)
Attack Potency: Continent level, possibly
Moon level (Able to match a furious
Oden blow for blow. Fought and matched
Big Mom[2]. He was stated to be one of the few people that can stop
Blackbeard[3], implying he would be able to clash with the
Gura Gura no Mi, the strongest Paramecia Devil Fruit
[Statistics Values 1]),
Multi-Continent level, possibly
Moon level in Zoan Forms (Stronger than before. Knocked back Kozuki Oden with a Bolo Breath
[4]. His vivre card states that his already high physical abilities get improved even further in his Hybrid Form
[5]. The full yield of his Bolo Breath scorched
Gear 5th Luffy's body
[6], and pushed Snakeman Luffy through Onigashima
[7]. His Kaifu effortlessly cut Kiku's arm off and bisected her sword,
even though she was able to endure physical attacks from him off-screen,
pushed back and drew blood from Post-Haoshoku Advancement Base Luffy
[8], and
drew blood from Gear 5 Luffy[9] when
his own Zoan bite failed to do so [10]. His presence kept
Admiral Ryokugyu away from Wano
and he was called a dreaded monster by Blackbeard. With just one blow in Hybrid Mode, he
injured Law in spite of the later using Curtain
[Statistics Values 2]),
far higher with Haōshoku Infusion (Completely incapacitated Luffy with a Kosanze Ragnaraku
[11]. Badly hurt
Law and
Zoro with his Raimei Hakke
[12]. Slammed Gear 5th Luffy into the ground with his Kosanze Ragnaraku
[13]. Can injure Gear 5th Luffy by hitting him with a
Daiitoku Raimei Hakke[14]), up to
Multi-Continent level, possibly
Small Planet level with Shuron Hakke (
His Haki was stated to be getting stronger while in this state
[15]. His Gundari Ryuseigun matched Luffy's
Roc Gatling[15], and his Horai Hakke killed an off-guard Bounceman Luffy
[16][Statistics Values 3]),
Multi-Continent level, possibly
Small Planet level with Kaen Daiko (
Matched Luffy's Gomu Gomu no Bajrang Gun with his
Shoryu: Kaen Hakke for a long period of time prior to its decompression
[17][Statistics Values 4])
Speed: FTL+ (Fought on par with
Oden. Matched
Big Mom blow for blow),
higher in Zoan Forms (Dodged Zoro's Dragon Blaze in his Full Zoan Form
and Luffy's Red Hawk in his Hybrid Form),
far higher with Thunder Bagua (Stated to be too fast by a
Luffy who was using Kenbunshoku Haki
[18], when a weaker Luffy who was also using Kenbunshoku Haki considered light speed to be slow
[19].
Blitzed Kin'emon in Base Form and
Law in Hybrid Form)
Lifting Strength: Class E (Comparable to
Big Mom),
Class Y in Full Zoan Form (Was capable of trapping Gear 4th: Snakeman Luffy in his mouth, and later
made Gear 5 Luffy struggle with his jaw strength),
Class P with Flame Clouds (
Lifted Onigashima hundreds of kilometers off the ocean)
Striking Strength: Continent level, possibly
Moon level,
Multi-Continent level, possibly
Moon level in Zoan Forms,
far higher with Haōshoku Infusion, up to
Multi-Continent level, possibly
Small Planet level with Shuron Hakke,
Multi-Continent level, possibly
Moon level with Kaen Daiko
Durability: Continent level, possibly
Moon level (Fought with
Big Mom for at least one day and sustained minor damage
[20].
Eustass Kid complimented his toughness and thought that
he couldn't possibly get hurt by physical blows. Scaling off his attack power, as he
doesn't know how to kill himself
[21]),
Multi-Continent level, possibly
Moon level in Zoan Forms (Noted for his
heightened defenses thus should be superior to his base. His scales were completely unharmed by a
shot from Izou and several slashes from Killer. Withstood his own Bolo Breath redirected at him
twice by Raizo and Gear 5 Luffy. Took several hits from
Luffy using Haōshoku Infusion
[22], even taking parts of his Roc Gatling
[15]), up to
Multi-Continent level, possibly
Small Planet level with Shuron Hakke (Grew in durability after drinking several times to the point to where he could
take Luffy's Over Kong Gun with little damage[Statistics Values 5]),
Multi-Continent level, possibly
Moon level with Kaen Daiko (Withstood Luffy's Gomu Gomu no Bajrang Gun for a long period of time prior to its decompression
[23])
Stamina:
Superhuman (One of his main strengths that has been highlighted time and time again is his monstrous stamina and pain tolerance, which has undoubtedly contributed to his title as the world's "Strongest Creature". Kaidou is introduced as a man who challenged the Marines and Four Emperors and was caught 18 times-- and endured over a thousand tortures. He was sentenced to death forty times using various methods, all of which he has survived. His hobby is "suicide"
[24]. Characters weaker than him have fought for days on end (from five
[25][26] to ten days
[27]), and he fought
Big Mom for at least a day, emerging with only minor damage and displayed no signs of fatigue
[28]. During the raid of Onigashima, the Red Scabbards were to accomplish the rare feat of piercing his skin and drawing blood from with their swords and attacks, although these wounds were shown to have little, if any, effect on Kaidou
[29]. He could withstand Raizo's Maki Maki no Mi redirecting the force of his own Bolo Breath at close range, as well as assaults from
Nekomamushi and
Inuarashi's Sulong-enhanced attacks,
Kawamatsu’s Amano-gawa, Izou's Dangirigan, and Kikunojo's Zansetsu-gama, eventually requiring
Kin'emon,
Denjiro, Inuarashi and
Ashura Doji to combine their attacks in the form of a Togen Totsuka to put him down
[30], which he still didn't fall from as he stated that the injuries to be minor in comparison to when Oden inflicted a massive scar on him before proceeding to begin his counterattack
[31]. Later, after defeating the Scabbards
[32] and generating Flame Clouds to lift Onigashima with over 35,000 people on it and move the island to Wano
[33], he proceeded to engage in another lengthy battle with members of the Worst Generation (
Luffy,
Zoro,
Law,
Kid, and
Killer), where despite taking even more lasting damage, Kaidou continued fighting regularly, only becoming irritated rather than alarmed by their growing ability to damage him numerous times, either through brute force or bypassing his defenses
[34][35][36], one of which being enough to fatally wound someone of
Dolflamingo's caliber and would have kill him if not for his ability to mitigate the damage
[37]. Despite Luffy's increased strength and skill with Haōshoku Infusion
[38], Kaidou was able to match him for dozens of minutes before eventually defeating him
[39]. Following that, he began his search for
Kozuki Momonosuke[40], defeated Kin'emon again
[41], fought
Yamato in a lengthy battle
[42], and engaged in his second battle with Luffy that night
[43]. Even after enduring more attacks that were greatly enhanced by advanced applications of Busōshoku and Haōshoku Haki, and despite being weakened by still carrying Onigashima with his Flame Clouds, Kaidou was able to defeat Luffy once more
[44]. Following that, he engaged in a skirmish with the Ninja-Pirate-Mink-Samurai Alliance and Marco
[45], before being dragged into one last showdown with Luffy
[46], this time the latter having assumed his Gear 5th, which is considered the pinnacle of what he can do. He fought Gear 5th Luffy for an extended period of time, enduring Luffy stretching through his body, hitting vital spots like his eyes, brain and organs, as well as numerous attacks coated with Busōshoku and Haōshoku Haki
[47][48]. After all of this, it took Luffy's
most powerful attack to overpower Kaidou's Kaen Daiko and finally put him down
[49])
Range: Several Meters by Sheer Size,
higher with Hassaikai,
Hundreds of Meters in Dragon Form,
Tens of Kilometers with
Bolo Breath, Flame Clouds (Could cover
Onigashima and lift the island
hundreds of kilometers into the sky), and Flame Dragon Form (He envelopes his dragon body with flames,
becoming larger than Onigashima in length)
Standard Equipment:
- Hassaikai (八斎戒, meaning "Eight Precepts"): His signature weapon is a large, spiked, metal kanabō, which he uses as the catalyst for all his melee attacks. While it does not have a rank, if Kaidou choose to leave the weapon behind it would be called a "legend".
Intelligence: Above Average (Kaidou should be quite intelligent as a Yonko, as he has large territories to manage and has to take care of his massive crew. He is revered in Wano as the "Wise King". Already as a child he was an accomplished warrior)
Weaknesses: Standard Devil Fruit users weaknesses. Easily gets angry over petty reasons. An occasionally suicidal drunkard.
Kaido wins in durability arguably, but unless you believe he's a moon buster he's outmatched in Rayquaza in this regard.