Chainsaw Man has always framed its horror around humanity’s most primal anxieties, turning abstract fears into tangible, godlike Devils that reshape the story’s power hierarchy. From Part 1’s shocking introduction of the Darkness Devil to Part 2’s deeper exploration of Primal Fears like Falling and Aging, the manga has made it clear that some Devils exist beyond contracts, logic, or human control. These Primal Devils represent fears that are too old and too common to be concerned with culture or language or even survival instinct. With Part 2 still raising the intensity of its themes of identity, control, and existential dread, there is no longer a question of whether more Primal Devils will emerge, but what fears Tatsuki Fujimoto must still liberate.
In that context, Chainsaw Man Part 2 remains uniquely positioned to introduce additional Primal Devils without breaking internal logic. Primal Devils are not born from modern anxieties but from instincts that predate civilization itself. They are closer to natural laws than villains, often existing as inevitabilities rather than antagonists. With Hell now firmly re-established as an active setting and the War Devil’s conflict with Chainsaw Man intensifying, the narrative space for new Primals has never been wider.
Chainsaw Man: Potential Primal Devils Still Waiting in Part 2
1. Fear of the Unknown Devil
Among all possible candidates, the Fear of the Unknown Devil feels almost inevitable in the story. This Primal Devil would embody humanity’s terror of what lies beyond perception, reason, and comprehension. Rather than brute force, it would manipulate uncertainty itself, distorting reality, erasing context, and blinding victims not through darkness, but through overwhelming ambiguity. In a series already obsessed with erased concepts and forgotten truths, this Devil could directly challenge Chainsaw Man’s power to delete fears by making even knowledge itself unreliable.

Narratively, the Fear of the Unknown Devil fits Fujimoto’s style perfectly. It could manifest as shifting forms, incomplete silhouettes, or environments that never fully resolve, forcing characters to act without understanding consequences. For Denji and Asa, whose conflicts revolve around control and identity, this Devil would be uniquely destabilizing. In Chainsaw Man, fear becomes most powerful when it cannot be named, and this Primal would embody that principle completely.
2. Fear of the Ocean or Depths Devil
Fear of the Ocean which is usually attributed to thalassophobia is a primitive terror that is related to the insignificance of mankind. Being an entity as a Primal Devil in Chainsaw Man, this would not merely be working with water, but with crushing pressure, bottomless fall, and loss of direction that comes with the abyss. Victims could experience drowning without water, crushed by invisible weight, or pulled toward an infinite void beneath reality.

This Devil would thematically echo the story’s repeated imagery of falling, consumption, and surrender. Tentacles emerging from darkness, echoes of distant currents, and warped gravity could make it one of the most visually striking Primals. Given Fujimoto’s fondness for environmental horror, the Ocean Devil could transform entire battlefields into hostile, suffocating spaces where escape is psychologically impossible.
3. Fear of Space and the Cosmic Void Devil
In Chainsaw Man, cosmic horror has already brushed the narrative through Hell’s alien geometry and the Darkness Devil’s incomprehensible design. A Fear of Space or Cosmic Void Devil would expand that concept, representing isolation on a universal scale. This Primal would represent the fear of human loneliness in an infinite universe, which is observed by cold stars.

Its powers may involve distortion of gravity, loss of sensory deprivation, and dilation of time, keeping the victims in an endless silence. Actors with cold eyes would support the notion that there is nothing one can avoid looking at. Thematically, this Devil would confront characters with their insignificance, challenging the human-centered worldview that the story repeatedly dismantles. It would also deepen the series’ existential tone without relying on conventional violence.
4. Fear of Pain Devil
While death is common in Chainsaw Man, pain is often treated as incidental rather than central. A Fear of Pain Devil would invert that approach, making suffering itself the weapon. This Primal Devil could amplify every nerve impulse, rendering even minor injuries unbearable and preventing healing through constant sensory overload. Unlike other Devils, it would not aim to kill quickly, but to prolong agony indefinitely.

Such a Devil would be especially cruel in a series filled with characters who rely on regeneration. Denji’s usual advantage—his ability to recover—would become meaningless if pain itself is endless. Narratively speaking, the Fear of Pain Devil would de-spectacle fights and make characters face the test of stamina, hardiness, and the boundary of determination. It goes in line with the fact that Chainsaw Man prefers to subvert action elements with psychological torment.
5. Fear of Extinction Devil
The Fear of Extinction Devil would represent humanity’s dread of complete erasure, not just individual death but the end of lineage, culture, and memory. In the story, where Chainsaw Man can erase Devils from existence, this Primal would serve as a dark mirror to that power. Rather than deleting concepts, it could erase futures, bloodlines, or potential itself.

This Devil could force characters into impossible survival scenarios, triggering primal instincts and moral collapse. Whole nations may be whittled down to rival flakes, which drives home the point as to the thinness of the veneer of civilization. It would also reinforce thematically the question that is recurrent in the story, what is to be preserved when survival is absolute?
6. Fear of Loneliness or Isolation Devil
Isolation is already a major emotional theme in Chainsaw Man, particularly through Denji and Asa’s internal struggles. A Fear of Loneliness Devil would weaponize that concept on a metaphysical level. It could trap individuals in personal voids, sever emotional bonds, and erase the sensation of being perceived by others.

Unlike Devils that kill outright, this Primal would dismantle relationships, turning allies into strangers. To characters whose power is bound to a relationship, like the emotional dependency on others in the case of Asa, this Devil would be crippling. It would also imply that the story continues to explore the theme of alienation in contemporary society, and it is thus among the thematically resonant Primals of all possible.
7. Fear of Disease or Plague Devil
Disease has influenced the history of man through an insidious, unstoppable propagation, and as such, is an obvious selection in a Primal Devil of Chainsaw Man. This Devil would be mutational, contagious and paranoid, and would transform allies into carriers and an illusion of safety. Its presence could destabilize entire cities without a single direct attack.

In a world where Devils thrive on fear, the Disease Devil’s power would multiply exponentially through panic alone. Physical isolation, suspicion, and breakdown of society would naturally follow. In terms of storytelling, it would enable the story to engage in exploring the issues of systemic failure, the collective fearfulness and the collapse of authority without the conventional fighting.
Chainsaw Man has never been short of proving that its biggest strength is in shifting universal fears to narrative-propelling machines instead of mere villains. The introduction of additional Primal Devils in Part 2 would not merely escalate power levels, but deepen the series’ philosophical core. Each of these seven fears unknown, depths, cosmic isolation, pain, extinction, loneliness and disease all find a natural home with themes that the story has already built up. Provided that Fujimoto decides to add at least some of them, Part 2 may also transform how contemporary shonen manga treats horror, turning Chainsaw Man not only ludicrous, but enduringly profound.