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Biographical information


c. 2511

Personal details





Political and military information



Petty Officer Second Class or higher[1]

Service number:



Leon-011 is a Spartan-II supersoldier and a member of Omega Team.[2][3]


Early childhood[edit]

Like the other SPARTAN-IIs, Leon-011 was abducted at age six and conscripted into the SPARTAN-II program in 2517. He later survived the augmentation procedures in 2525. Along with Robert-025 and August-099, Leon formed the Spartan-II fast reaction unit Omega Team,[2] which was created primarily for asset denial operations.[3]


Omega Team is typically deployed with the goal of breaking the enemy's hold long enough in order to reinforce local defenses and buy time for a UNSC response. During the Human-Covenant War, Omega Team was deployed to several colony worlds threatened by the Covenant, assisting in emergency evacuation efforts and enacting classified last-stand protocols. The team proved highly proficient at the denial of critical resources, data, and even personnel to the Covenant by any means necessary, which sometimes required the deployment of weapons of mass destruction.[3]

On several occasions, Omega Team worked closely with Jerome-092, Alice-130, and Douglas-042 of Red Team, including during the defense of Arcadia when it was attacked in 2531.[4][5] During the battle, they were separated when the UNSC Spirit of Fire departed the system to chase retreating Covenant forces.[6]

In the late stages of the Human-Covenant War, or the earliest years of the post-war era, Omega Team was involved in the testing of numerous "Breach" development iterations on the MJOLNIR Mark VI platform. These field tests were successful, and saw improvements folded into later GEN2 and GEN3 productions.[7]

Post-war service[edit]

Decades after Red Team's last encounter with them, Commander Jerome-092 discerned that Omega Team had survived the war based on UNSC records recovered from the Henry Lamb Research Outpost.[2] In 2560, the team was deployed to Arcadia once again, this time with goal of observing a deal between Adam Andrews—the CEO of Optican—and Kig-Yar working for Nor Fel. After a successful handoff between the two parties amid Forerunner ruins, August eliminated a trio of Kig-Yar with her M99A2S3 Stanchion, the signal for Leon-011 and Robert-025 to move. While Leon rushed for the Kig-Yar's Phantom, Robert positioned himself to neutralize any escapees from the craft with his machine gun turret. Leon leaped through the dropship's rear gravity lift and ignited his energy sword to eliminate the pilot and any others still aboard. When he confirmed the dropship was clear, Robert got to work securing the Kig-Yar's would-be prize: the focus cannon of a R'awuw-pattern Scarab. After checking the Phantom's cargo manifest, Leon confirmed that the aliens had delivered a shipment of rumbledrugs to Andrews, exclaiming that it had been a while since he had seen the drugs while sending the data to his team's HUDs. With the Scarab's cannon secure, the manifest confirmed, and their objective complete, Omega Team left the area.[8]


Leon-011 specializes in and is equipped for close-quarters combat. At some point, he began using a custom Domotos-pattern energy sword.[2] Additionally, circa the end of the Human-Covenant War, Leon participated in field tests while wearing MJOLNIR Mark VI with the Breach Scout helmet attachments, UA/GRT78 chest armor, and UA/WAYLAND shoulder armor.[9] As of 2560, he wears Mark IV MJOLNIR armor with a Valiant helmet incorporating the CNM(5)/BNR/TYPHON-X attachment. He also wears TAC/THORNBLADE left shoulder (which includes an experimental, wickedly sharp combat knife), an IMA/GARITA/OMEGA right shoulder, and an UA/RINGECK chestpiece. Robert's left forearm includes the TAC/FIRMBLUR TRIPLET attachment while his kneepads are the UA/ULLOP variant. He sports a TAC/SBER-X DISPENSER attached to his left leg.[8][10]

Production notes[edit]

  • Leon's name (Λέων) means "Lion" in Greek, possibly referenced by his yellow color scheme.
  • 343 Industries has noted in a Canon Fodder post that both the concept art and the final Halo Wars 2 in-game models of Omega Team could be considered authoritative in some capacity, stating that "Discerning lore-lovers should feel free to consider both iterations fair game for expanding their imaginations."[2] Furthermore, the 2022 edition of the Halo Encyclopedia utilizes said concept art for its depiction of Omega Team, firmly cementing its canon status.[3] In 2024's Content Update 29, Leon's armor suite was fully-realized in canon as the Valiant armor bundle for Halo Infinite.[10]


List of appearances[edit]


  1. ^ Halo: The Fall of Reach, chapter 11
  2. ^ a b c d e Halo Waypoint, Community Update - Know-Scope (Retrieved on Sep 29, 2021) [archive]
  3. ^ a b c d Halo Encyclopedia (2022 edition), page 65
  4. ^ Halo Wars, campaign level Arcadia Outskirts
  5. ^ Halo Wars 2, Phoenix Logs: Omega Team
  6. ^ Halo Wars, campaign level Anders' Signal
  7. ^ Halo Waypoint, Canon Fodder - Food for Thought (Retrieved on Oct 7, 2022) [archive]
  8. ^ a b Halo: Hippocratica
  9. ^ a b Halo Waypoint, Canon Fodder - Food for Thought: This image's original filename, Omega-Team-Breach-scaled.jpg, and alt text confirm these Spartans' identity. "Screenshot of Leon-011 and Robert-025 testing Breach armor" (Retrieved on Oct 7, 2022) [archive]
  10. ^ a b Halo Waypoint, Community Update - Fireteam February (Retrieved on Feb 11, 2024) [archive]