Table of Contents

Osiris

Part 1: The Dossier: An At-a-Glance Summary

Part 2: Origin and Evolution

Disambiguation: God and Mutant

Before delving into their specific histories, it is essential to formally distinguish between the two Marvel characters who have used the name Osiris. The vast majority of appearances and lore are associated with the Heliopolitan god. The mutant is a significant but far more obscure character, primarily relevant to the mythology of Apocalypse. This guide will analyze both in separate, dedicated sections to provide a complete and unambiguous history.

The Egyptian God (Member of the Ennead)

Publication History and Creation

The god Osiris made his official debut in the Bronze Age of Comics, first appearing in Thor #239 in September 1975. He was created by writer Roy Thomas and artist John Buscema as part of their expansion of the cosmic and mythological landscape of the Marvel Universe. By introducing the Ennead, Marvel's fictionalized pantheon of Egyptian gods, Thomas and Buscema placed them on equal footing with the Asgardians and Olympians, creating a richer, more diverse cosmic hierarchy. Osiris's introduction was crucial, establishing his brother seth as a major multiversal threat, not just to the Egyptian gods but to asgard and thor as well.

In-Universe Origin Story (Earth-616)

The in-universe origin of Osiris and the Ennead aligns with Marvel's established lore for its pantheons. They are not literal gods in the omnipotent sense but are an ancient race of powerful, extradimensional beings who were worshipped as deities by the ancient Egyptians. These beings, known as the Heliopolitans, reside in the dimension of Celestial Heliopolis, a pocket “god-realm” analogous to Asgard or Olympus. Osiris is the son of the elder gods Geb (Earth) and Nut (Sky). From birth, he was destined for greatness, beloved for his wisdom and benevolence. He ascended to become the ruler of the Ennead and, alongside his sister-wife Isis, ushered in a golden age of peace and prosperity. This idyllic reign attracted the jealousy of his brother, Seth, the god of death and chaos. In a tale mirroring classical mythology, Seth deceived and murdered Osiris, dismembering his body and scattering the pieces across the land. The devoted Isis, with the help of gods like Anubis and Thoth, painstakingly recovered the pieces of Osiris's body. Through powerful magic, she resurrected him. However, having passed through the gates of death, Osiris could no longer permanently dwell in the land of the living. He became the Lord of the Underworld, the righteous judge of souls, and the benevolent ruler of the afterlife. His son, horus, would eventually avenge him by defeating Seth and claiming the throne of the living gods. This foundational myth established the core conflict of the Ennead and positioned Osiris as a figure of immense power, wisdom, and tragic authority.

Marvel Cinematic Universe (MCU)

The MCU introduced Osiris and the Ennead more gradually, primarily through the Disney+ series moon_knight and the film thor_love_and_thunder. In Moon Knight, Osiris is established as a leading figure among the Ennead who, like the others, have withdrawn from direct intervention in human affairs. Instead, they operate through Avatars. Osiris's avatar, Selim, acts as the leader of the Ennead's council on Earth. This version of Osiris is depicted as strict, bound by tradition, and initially skeptical of the claims made by Marc Spector and khonshu regarding the threat of Ammit. His authority is absolute among the council, and his judgment leads to Khonshu's initial imprisonment. This portrayal emphasizes his role as a lawmaker and judge, consistent with his comic book counterpart, but frames him in a more bureaucratic and detached manner. Osiris makes a physical appearance in thor_love_and_thunder as a member of the Council of Godheads in Omnipotence City. He is seen alongside other pantheon leaders when Thor arrives to plead for help against Gorr the God Butcher. He is depicted seated near Zeus, holding a Was-scepter, and appears visually regal and ancient. While he has no dialogue, his presence confirms his status as the leader of the Heliopolitan gods and a peer among the universe's most powerful divine beings. The MCU has thus far focused on Osiris's role as a ruler and judge, carefully distinguishing the god himself from the actions of his human avatar.

The Mutant Horseman (Kadar ahm Al-Saran)

Publication History and Creation

The mutant known as Osiris was created by writer Bob Layton and artist Jackson Guice. He first appeared, and died, in a single issue: X-Factor #4, published in May 1986. This was a flashback story revealing the very first incarnation of Apocalypse's Four Horsemen. Layton and Guice created this original team to provide a deeper, more ancient context for Apocalypse, establishing that his modus operandi of using four empowered servants was a tradition stretching back millennia. Osiris was conceived as the original “War,” a template for all future Horsemen who would bear that title. Though his appearance was brief, his significance lies in being the first, setting a precedent for one of the most iconic villainous teams in x-men history.

In-Universe Origin Story (Earth-616)

Kadar ahm Al-Saran was a warrior and mutant living in ancient Egypt during the rise of en_sabah_nur, the man who would become Apocalypse. Little is known of his life before his transformation, save that he was a disgraced warrior seeking to prove his worth. During a time of great conflict, Apocalypse was assembling his first “Four Horsemen,” a personal guard empowered by a combination of his own mutant abilities and salvaged Celestial technology. Apocalypse found Kadar and sensed his potential, offering him the power he craved. As part of a dark ritual, Apocalypse transformed Kadar into “War,” the first of his Horsemen. His body was augmented, granting him immense strength and the ability to fly. He was given a powerful energy weapon, capable of functioning as both a scythe and a bow that fired destructive arrows. Alongside the other original Horsemen—Pestilence, Famine, and Death—he served as Apocalypse's fist, crushing his master's enemies. His tenure was brutally short. During a major battle, the Horsemen were tasked with protecting Apocalypse. However, Ozymandias, a rival and future servant of Apocalypse, betrayed them, sabotaging their efforts. During the ensuing chaos, Osiris (War) was slain in battle. His death served as a harsh lesson for Apocalypse about loyalty and the expendability of his pawns. Though he died thousands of years in the past, his legacy as the first War echoed through the ages, with Apocalypse seeking to replicate his power in future candidates.

Marvel Cinematic Universe (MCU)

Kadar ahm Al-Saran, the mutant Horseman Osiris, has not appeared or been referenced in the Marvel Cinematic Universe. The MCU's only on-screen depiction of Apocalypse was in the 20th Century Fox film X-Men: Apocalypse, which is not part of the mainline MCU continuity (Earth-199999). Should Marvel Studios choose to introduce their own version of Apocalypse, it is possible they could explore his original Horsemen. An MCU adaptation of Osiris could portray him as a historical figure from ancient Egypt, perhaps a warrior from a rival tribe or even a palace guard, whose mutant abilities were activated and amplified by Apocalypse's technology. This would be an effective way to establish the long and bloody history of Apocalypse on Earth before he clashes with the modern x-men.

Part 3: In-Depth Analysis: Powers & Abilities

The God: Divine Attributes & Powers

Earth-616 (Prime Comic Universe)

As the Lord of the Heliopolitan pantheon, Osiris possesses attributes common to all members of his race, but amplified by his station and specific divine portfolio.

Marvel Cinematic Universe (MCU)

The full extent of the god Osiris's powers in the MCU remains largely unexplored, but we can infer several abilities from his appearances and role.

The Horseman: Apocalyptic Enhancements

Earth-616 (Prime Comic Universe)

Kadar ahm Al-Saran was a mutant, but the specific nature of his original powers is unknown. The abilities he displayed as War were granted to him by Apocalypse through Celestial technology.

Marvel Cinematic Universe (MCU)

As this character has not appeared in the MCU, he has no established powers or abilities within that continuity.

Part 4: Key Relationships & Network

1)

Core Allies

Arch-Enemies

Affiliations

Part 5: Iconic Events & Storylines

The Seth War (Thor Vol. 1)

This storyline, spanning Thor #395-400, was a major confrontation between the Asgardians and the Ennead. Seth, having conquered Heliopolis, turned his armies of the dead against Asgard itself. Osiris, ruling from the underworld, played a crucial background role, representing the kingdom Seth had usurped. His defeat and imprisonment were the catalysts for the conflict. The storyline saw Horus and Thor lead the charge against Seth's forces. This arc was significant for firmly establishing the power level of the Egyptian gods and integrating them directly into the cosmic struggles of the Asgardians.

Chaos War

In this major 2010-2011 crossover event, the Chaos King, Amatsu-Mikaboshi, began a campaign to destroy reality. His first targets were the realms of the gods and their afterlives. Celestial Heliopolis was one of his early conquests. The forces of the Chaos King overran the Egyptian underworld, and Osiris was shown being consumed by the encroaching void. This was a defining moment of defeat for the character, showcasing the immense power of the Chaos King, who could literally devour a god of death and his entire realm. Osiris was later restored along with the rest of reality when Hercules sacrificed his “All-Father” level powers to repair the damage done by Mikaboshi.

The First Horsemen (X-Factor Vol. 1 #4)

This is the only significant story for the mutant Osiris. In a flashback narrated by Apocalypse's sentient ship, the modern-day X-Factor learns about the very first team of Horsemen. The story depicts their creation and their final, fatal battle. Osiris is shown as a fearsome warrior, flying into battle and cutting down foes with his energy scythe. His death in this battle, caused by betrayal and overwhelming odds, served as a stark lesson for Apocalypse and established the high stakes and brutal nature of serving the ancient mutant. This single issue is the cornerstone of the mutant Osiris's entire lore.

Part 6: Variants and Alternative Versions

While neither character has a wide array of famous alternate-reality counterparts like Spider-Man or Wolverine, there are a few notable interpretations.

See Also

Notes and Trivia

2) 3) 4) 5) 6) 7) 8) 9)

1)
This section primarily focuses on the god Osiris, as the mutant Horseman's network was limited to Apocalypse and his immediate circle during his very brief existence.
2)
The name Osiris is derived from the Egyptian wsjr, and he is one of the oldest and most important deities in the Egyptian pantheon.
3)
In the comics, the Heliopolitan realm is sometimes depicted as a golden city floating on a shard of land in a pocket dimension, visually similar to Asgard.
4)
While the mutant Osiris died in his first appearance, the concept of his role as the first War has been revisited in guidebooks and flashbacks, such as in The Rise of Apocalypse miniseries, cementing his place in X-Men lore.
5)
In the MCU's Moon Knight, the staff used by Osiris's avatar Selim is topped with the “crook and flail,” ancient symbols of Egyptian kingship directly associated with the mythological Osiris, signifying his judgment and authority.
6)
The conflict between Osiris/Horus and Seth is one of the oldest recurring mythological narratives in human history, and Marvel uses it as a powerful, ready-made family dynamic to drive cosmic conflict.
7)
Issue Citation: The death of the mutant Osiris and the first Horsemen is detailed in X-Factor (1986) #4.
8)
Issue Citation: Osiris makes his first appeal to Thor for aid against Seth in Thor (1966) #239.
9)
Issue Citation: Osiris and the realm of Heliopolis are consumed by the Chaos King in Chaos War #2 (2010).