Exploring the realm of That Time I Got Reincarnated as a Slime unveils a cast of formidable demon lords, revered as the mightiest entities on the planet. While shrouded in mystery, their names evoke a mix of fear, respect, and admiration among all who know of them.
Originally known as the Ten Great Demon Lords, their ranks have dwindled to eight following the rise of Rimuru Tempest. Now known as Octagram, these powerful beings are ranked based on their demonstrated strength throughout the series.
8 Ramiris
The Cheerful Queen of Fairies
Despite her diminutive size and limited physical strength, Ramiris, the fairy queen, wields unique powers as the master of labyrinth creation. Within her labyrinths, she is virtually invincible, showcasing unmatched creativity and control.
7 Leon Cromwell
The Stern Former Hero
Once a Chosen Hero, Leon Cromwell now commands respect as a demonoid ruler with formidable strength. His pivotal role in summoning key figures underscores his enduring influence in the realm.
6 Luminous Valentine
The Queen of Vampires
With a deceptive appearance and mastery over holy magic, Luminous Valentine, the elusive queen of vampires, commands dark powers that defy expectations, showcasing a blend of light and darkness.
5 Dagruel
The King of Giants
As the revered King of Giants, Dagruel stands out for his imposing presence and unparalleled combat skills. His reputation for wisdom and strength cements his status as a respected figure among demon lords.
4 Dino
The Sleepy Fallen Angel
Known as the enigmatic 'Sleeping Ruler,' Dino's mysterious origins and latent power as a fallen angel set him apart. His decision to seal his immense power hints at hidden depths yet to be fully revealed.
3 Rimuru Tempest
The Carefree King of Monsters
Ascending from a humble slime to a formidable demon lord, Rimuru Tempest's journey is marked by ingenuity and magical prowess. His evolution showcases a unique blend of creativity and power that sets him apart in the demon lord hierarchy.
2 Milim Nava
The Chaotic Daughter of the Star King Dragon
Embodying a unique blend of power and innocence, Milim Nava, the dragonoid daughter, commands respect with her raw strength and dynamic abilities. Her lineage and combat prowess position her as a force to be reckoned with among demon lords.
1 Guy Crimson
The Almighty Primordial Demon
Standing at the pinnacle of power, Guy Crimson reigns as the formidable leader of the Octagram with unmatched strength and magical prowess. His legacy of epic battles and enduring rivalries solidify his status as the most fearsome being in the realm.