Pelosus-pattern energy sword

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Pelosus-pattern fireblade
H2A EnergySword-MP.png
Production overview


Assembly Forges[1]


Energy sword



131.1 centimetres (51.6 in)[1]


2.5 kilograms (5.5 lb)[1]

Ammunition type:

Superheated, shaped plasma[2][3][4]

Feed system:

100 battery units[2][3]

Effective range:


Service history

In service:

Human-Covenant War[5][6]


The Pelosus-pattern fireblade (UNSC Type classification: Type-1 Energy Weapon/Sword, T-1 EW/S),[3] more commonly known as the energy sword, is a Covenant melee weapon manufactured by Assembly Forges.[1]


Design details[edit]

Main article: Energy sword (fiction)

The Pelosus-pattern fireblade is one of the many energy sword variants manufactured by the Covenant. The Pelosus-pattern is characterized by its circular blade contour around the hilt.[1] Some Pelosus-pattern energy swords contain a fail-safe mechanism that can permanently disable the weapon if the Sangheili wielding it drops it.[7] When dropped, the failsafe engages by deactivating the magnetic field before dispersing the plasma. The plasma then consumes the handle and thus destroys the weapon.[5]


The Pelosus-pattern fireblade is a weapon carried by high-ranking Sangheili; during the Battle of Installation 04 and the Battle of Installation 05, it saw extensive use among Ultras, Zealots, Stealth Sangheili, Sangheili Special Operations Officers, and Honor Guards.[5][6] During the Algolis Invasion, the Sangheili Itho 'Hesiikee was a known wielder of a Pelosus-pattern bloodblade, which he intended to use to execute the Jiralhanae Atriox, but he was killed by his own bloodblade when Atriox retaliated.[8][9]


  • Bloodblade - As with many other patterns of energy swords, the Pelosus-pattern energy sword can be customized as a bloodblade, with red-colored plasma.[10]


Main article: Energy sword

The Pelosus-pattern energy sword was first introduced Halo: Combat Evolved, albeit unusable by players. It was then made available to players in Halo 2 and the Halo 2: Anniversary multiplayer component in Halo: The Master Chief Collection. The energy sword is a powerful melee weapon in close-quarters combat, capable of killing most foes with a single strike. It is a power weapon that appears on some multiplayer maps. In Halo 2: Anniversary multiplayer, the bloodblade variant is held by infected players in Infection.

Production notes[edit]

The "Hal's Sword" in Fable II.


Halo: Combat Evolved[edit]

Halo 2[edit]

Halo 2: Anniversary[edit]

Halo Wars 2[edit]


List of appearances[edit]