He possesses Conqueror's Haki.
Just like Luffy, Ace, and the Four Emperors of the New World, he has the potential to become a king.
This is something none of the other three candidates possess.
Those who have Conqueror's Haki are those who refuse to submit to others and aspire to stand at the top of the world.
Although some users of Conqueror's Haki are content to be second-in-command, such as Ace and Rayleigh, who were overwhelmed by the charisma of stronger individuals and chose to serve them, it's their leaders' strength and charisma that won them over.
Even if Whitebeard managed to captivate Ace, who attempted countless assassinations against him, it was not merely through force but through Whitebeard's compelling personality that Ace joined the Whitebeard Pirates.
Without immense strength and charisma, it is impossible to compel another user of Conqueror's Haki to submit.
This is a significant challenge.
From this perspective, Kid, as a user of Conqueror's Haki, embodies the trait of preferring death over submission.
To become a king, one cannot live under others.
Additionally, they recalled a crucial detail.
In the footage after the Dressrosa incident, following Doflamingo's defeat, these Supernovas appeared on screen.
At that time, reports highlighted the alliance formed between the Straw Hat Pirates and the Heart Pirates.
Not only that.
The newspapers also reported that Kid, Apoo, and Hawkins had formed their own alliance.
This implies that Kid, Apoo, and Hawkins allied after the Dressrosa incident.
Subsequently, Luffy and Law went to Zou, followed by Luffy rescuing Sanji from Tottoland and then arriving in Wano.
During this period, although Kid's activities were unknown, it was noted that Hawkins had joined the Beasts Pirates by the time Luffy and his crew arrived in Wano.
This indicates that the alliance between Kid, Apoo, and Hawkins had disbanded.
Given this, they speculated boldly.
Perhaps Kid and the others confronted Kaido after Dressrosa and were defeated.
Following the battle, Hawkins chose to join the Beasts Pirates.
While Kid's and Apoo's fates remained unclear, it was likely that Kid had also fallen into Kaido's grasp.
Considering the context, Kid, who is more resistant to submission than Apoo, is the most fitting answer to this question.
Compared to Drake, whose whereabouts are unknown, Kid, who has fallen into Kaido's hands, is a more suitable match for the answer.
After this brief analysis, the Straw Hat Crew concluded that the answer was Eustass Kid.
Upon hearing the Straw Hat Crew's answer, the red-haired man in front of the screen was displeased. "Caught by Kaido?" he said coldly. "I won't accept this! I'm destined to become the Pirate King!"
He refused to concede.
At this moment, Luke on the screen announced, "The answer is correct."
Kid's pupils dilated in shock. "How could this happen?!"
If he had been captured, what about his crewmate, Killer?!
Though he had a harsh personality, he deeply valued his partners.
In this sea, it's not only the Straw Hat Pirates who cherish their comrades; he does too.
As soon as he heard about his capture, his thoughts turned to the safety of Killer and the others. Killer had grown up with him, and their bond was as strong as Luffy's with Ace and Sabo.
His fiery temperament complemented Killer's calm and steady nature, much like Luffy and Zoro. They were one of the few crews with two Supernovas.
Kid looked at Luke, wondering if the gap between them and Kaido was so immense. Did that mean he, Killer, Apoo, and Hawkins were no match for Kaido?
At that moment, the entire world was stirred by Luke's words.
The answer to this question implied that Kid might lead the charge against Kaido with a coalition of forces aiming to overthrow him.
Now that Kid had been identified, the owner of Conqueror's Haki and the Magnet-Magnet Fruit user, a Supernova of the Worst Generation alongside Luffy and Law, the crusade had gained another fierce general.
The chance of success increased once more!
Could they truly see the Four Emperors' Kaido brought down?
Everyone was exhilarated.
If this was true, it would mark the second fallen Emperor they witnessed in the live broadcast quiz!
Meanwhile, Kaido's bounty order flashed in his mind.
"That brat," Kaido sneered disdainfully.
The only thing that worried him was the unexpected factor of Big Mom.
As for the other Supernovas, they were of little concern.
Big Mom laughed beside him. "Kaido, it seems you're facing more and more trouble. You won't be defeated by these little brats, will you?"
"What nonsense are you spouting?" Kaido retorted coldly. "And what about you? Aren't you ashamed of intruding into my territory without permission, only to be tricked and used?"
"What are you talking about?!" Big Mom snapped angrily at the exposure of her failures. "All of that was due to your subordinate's incompetence, not my own."
"That was your negligence," Kaido countered. "You were thrown into the sea just like that. Linlin, are your bones getting old and rusty? Is it so difficult to fly with your ability?"
Big Mom was at a loss for words. She could fly, but Zeus had been taken by the orange-haired woman from the Straw Hat Crew. The thought of Zeus being used to save Luffy while she was losing her memory turned Big Mom into a living joke. She vowed to take revenge.
"Straw Hat Luffy!!!" Big Mom ground her teeth.
On the screen, Luke continued:
After entering the New World, Eustass Kid sought to challenge the great pirates, particularly the Four Emperors.
However, contrary to expectations, he clashed with the Big Mom Pirates and the Red-Haired Pirates successively. In his battle with the Big Mom Pirates, he managed to wound one sweet commander but lost an arm in his fight against the Red-Haired Pirates.
Two years after entering the New World, Kid formed an alliance with Hawkins and Apoo, while Law and Luffy also formed an alliance.
However, the very next day, an accident occurred. While they were resting at their stronghold, a massive figure fell from the sky—Four Emperors Kaido.
Kaido had jumped from Sky Island with the intention of suicide. Upon landing, he created a deep crater but was unharmed. When he emerged, he encountered Kid and the others.
Kid, Hawkins, and Apoo fought Kaido but were defeated and captured. Kaido extended an olive branch, which Hawkins and Apoo accepted, but Kid refused to submit and was imprisoned. His partner, another Supernova, Killer, became a test subject for the SMILE fruit.
Unfortunately, Killer did not gain any abilities but was left with a perpetual smile.