Helios[a] is a long-range burst missile designed to be carried by Arsenal Birds and deployed by Erusea during the Lighthouse War. Helios missiles can be launched from very long ranges. They detonate in a blue flash of light and cause massive damage to all units caught inside the blast radius.
The origin of Helios missiles is not confirmed. The Osean AWACS Bandog was unaware of their existence until Osean headquarters provided intelligence on them, implying that Helios missiles are not Osean.
During Operation Eastern Wind, an Erusean officer laments "war merchants" not writing manuals in a language that he can understand. It is later revealed during Operation Gorgon that Belka (which utilizes the real-life German language) supplied Erusea with drones for the war, so the possibility exists that Belka also developed Helios.
Helios missiles were not used until the middle of the Lighthouse War. Before then, Osean and IUN forces repeatedly destroyed the missiles without realizing it: inside one C-17A Globemaster III during the IUN's Operation Eastern Wind, and inside two tank trucks during Operation Three of a Kind.
Helios was first officially launched in combat during Spare Squadron's Operation Flush. One or both Arsenal Birds fired Helios missiles to shoot down Spare Squadron, but they failed to destroy the squadron.
Helios missiles were not used again until the end of the war. The Erusean radical forces that still held control over Arsenal Bird "Justice" attempted to restock its Helios supply. Trigger shot down both SSTO supply ships carrying the Helios missiles.
During the Osean-Erusean coalition's Operation Daredevil, the Arsenal Bird "Justice" repeatedly fired Helios missiles to shoot down coalition aircraft. The coalition suffered casualties, but the mission continued and Trigger destroyed the Arsenal Bird.
- Helios (ヘリオス)
- Mission 09: "Faceless Soldier", Ace Combat 7: Skies Unknown.
- Mission 02: "Charge the Enemy", Ace Combat 7: Skies Unknown.
- Mission 16: "Last Hope", Ace Combat 7: Skies Unknown.
- Mission 08: "Pipeline Destruction", Ace Combat 7: Skies Unknown.
- Mission 17: "Homeward", Ace Combat 7: Skies Unknown.
- Mission 19: "Lighthouse", Ace Combat 7: Skies Unknown.