Does Diablo betray Rimuru?

When it comes to That Time I Got Reincarnated as a Slime, Rimuru Tempest’s journey is full of fascinating allies, surprising enemies, and plenty of questions about loyalty. One of the most talked-about characters in this regard is Diablo, the mysterious and overwhelmingly powerful primordial demon who swears allegiance to Rimuru.

But because of his frightening presence and somewhat unpredictable personality, many fans wonder: Does Diablo betray Rimuru? Let’s walk through what we know from the light novel, manga, and anime, and settle this once and for all.

Who is Diablo in That Time I Got Reincarnated as a Slime?

Before diving into betrayal rumors, it’s worth understanding who Diablo really is. Diablo is one of the Primordial Demons, also known as Noir. These beings are ancient, immensely strong, and feared across the world. Diablo first appears during the events following Rimuru’s ascension to Demon Lord.

Rimuru summons him during a crucial moment, and Diablo becomes utterly fascinated with Rimuru’s strength, leadership, and charisma. Instead of resisting, he willingly offers his loyalty and accepts Rimuru as his master. From that point on, Diablo becomes one of Rimuru’s most trusted subordinates and is later given the title of one of the Twelve Demon Lords under Rimuru’s rule in the nation of Tempest.

Why do fans think Diablo might betray Rimuru?

Despite his loyalty, fans often speculate about betrayal because of Diablo’s nature. As a demon, his methods are ruthless, his personality is intimidating, and he has no problem using extreme measures to protect Rimuru’s interests.

Some reasons people raise suspicion include:

• Diablo’s obsession with Rimuru sometimes feels more dangerous than devoted.

• He enjoys manipulating others and using fear to achieve results.

• His true motives are hard to read, even for fellow subordinates.

This mix of mystery and menace naturally makes people wonder if he has a hidden agenda.

Does Diablo ever betray Rimuru?

The straightforward answer is no, Diablo does not betray Rimuru. In fact, his loyalty is unshakable throughout the series. If anything, he is arguably the most devoted of all Rimuru’s followers.

Rather than betraying him, Diablo goes above and beyond to ensure Rimuru’s will is carried out. He views Rimuru not just as a master but almost like a higher being worthy of absolute worship. This devotion often surprises even Rimuru, who sometimes feels a little overwhelmed by Diablo’s intensity.

In the manga and light novel, Diablo consistently proves his loyalty through his actions:

• He organizes Tempest’s political networks, using cunning strategies to secure Rimuru’s influence.

• He eliminates threats without hesitation, ensuring no one undermines Rimuru’s authority.

• He often anticipates Rimuru’s needs before being asked, showing his dedication.

So while his methods can be frightening, his heart (or rather, his demonic will) is fully aligned with Rimuru’s vision.

How Diablo’s loyalty compares to other subordinates

Rimuru’s nation of Tempest is full of loyal companions like Benimaru, Shuna, Shion, Souei, and Ranga. All of them are devoted, but Diablo is different. His devotion is almost fanatical. While others follow Rimuru out of respect and camaraderie, Diablo sees Rimuru as a master who deserves absolute service.

This makes him stand out. He doesn’t question orders, and he never hesitates to carry them out. If Rimuru asked him to take down an entire nation, Diablo would likely do it with a smile.

Some fans joke that if betrayal ever did happen in the series, Diablo would be the last person to suspect because his loyalty is almost frighteningly pure.

What role does Diablo play in Rimuru’s rise?

Far from being a betrayer, Diablo is actually one of the most important figures in Rimuru’s rise to power. His strategic mind, combined with his unmatched strength, makes him a critical player in Tempest’s expansion.

He acts as Rimuru’s shadow enforcer, taking care of the darker, politically sensitive work that Rimuru cannot always handle directly. Whether it is intimidating enemy nations, controlling information, or dismantling rival powers, Diablo ensures Tempest stays strong and respected.

In this way, his role is almost like Rimuru’s right hand, operating in the shadows to keep Tempest safe and secure.

Why Diablo’s loyalty matters so much

The question of betrayal is interesting because it highlights how much Diablo’s character contrasts with his origins. As a primordial demon, his reputation should make him one of the most untrustworthy beings in existence. Yet in Rimuru’s story, he represents the opposite: absolute loyalty, discipline, and unwavering dedication.

This twist adds depth to Rimuru’s leadership. It shows that even someone as fearsome as Diablo can be completely won over by Rimuru’s charisma and kindness.

Where to follow more of Diablo’s story

If you’re curious to explore more about Diablo and how his loyalty to Rimuru unfolds, the best way is to follow the manga and light novel. The manga in particular captures his presence brilliantly, combining both his terrifying aura and his moments of devotion. You can find detailed updates and content at That Time I Got Reincarnated as a Slime (tensura manga).

So, does Diablo betray Rimuru? No, not at all. Despite being a primordial demon with an intimidating nature, Diablo is perhaps Rimuru’s most loyal follower. His devotion is so strong that it borders on worship, and he never shows any signs of rebellion.

Instead of betrayal, what fans should look forward to is seeing how Diablo continues to shape the nation of Tempest. His cunning, power, and loyalty make him an irreplaceable ally, and his presence ensures that Rimuru’s enemies never stand a chance.

Far from being a traitor, Diablo is the definition of loyalty in the world of That Time I Got Reincarnated as a Slime.