Full name: Yuuya Bridges. Formerly of the US Army Tactical Armament Development Unit. A mixed-race individual with a Japanese father and an American mother. Having experienced discrimination against Japanese people due to political friction between the two nations during his childhood, he loathes Japan and maintains a cold, standoffish attitude. Main piloted units: Strike Eagle -> Raptor -> Fubuki -> Shiranui Second Phase 1 -> Shiranui Second Phase 2 -> Shiranui Second Phase 3. Rank: Second Lieutenant.

A surface pilot of the Idar Test Flight, feared alongside Cryska under the nickname "Scarlet Twin." She pilots the two-seater Su-37UB TSF with Cryska. She possesses high piloting skills that are unimaginable given her young appearance and innocent behavior. She looks up to Cryska like an older sister and is deeply afraid of being separated from her. She often speaks and acts mysteriously and, for some reason, takes an interest in Yuuya. Piloted unit: Su-37UB. Rank: Second Lieutenant.

A surface pilot belonging to the Soviet Army's experimental unit, the "Idar Test Flight." She possesses piloting skills that far surpass others and pilots the two-seater Su-37UB TSF with Inia. She is feared alongside her co-pilot Inia as the "Scarlet Twin." She is loyal to orders for the sake of her motherland and maintains a cold attitude toward those around her, but she shows an emotion that is somewhere between affection and obsession when it comes to Inia. Piloted unit: Su-37UB. Rank: Second Lieutenant.

A surface pilot of the Argos Test Flight, she is exceptionally competitive and quick to pick a fight. She hails from the Gurkha people, a brave mountain tribe. She possesses high-level high-mobility melee combat skills and has developed her own high-mobility close-quarters combat tactics known as "Kukri Knife." She is often called "Chobi." Piloted units: F-15 ACTV Active Eagle Unit 2, later Shiranui Second Unit 2. Rank: Second Lieutenant.

The mood maker of the Argos Test Flight, who keeps the atmosphere lively with his lighthearted Italian-style banter. He has a flighty personality, immediately hitting on any woman he sees, but he is caring and serves as the lubricant for the squad. His nickname is VG. He possesses high piloting skills cultivated through actual combat on the European front and is highly trusted by his squad members for his situational judgment and mobility control techniques. Piloted unit: F-15 ACTV Active Eagle Unit 1. Rank: Second Lieutenant.

A surface pilot of the Argos Test Flight with precise judgment and accurate sniping skills. She has a calm personality and serves as the brains of the squad. While her sculpture-like beauty often makes her seem cold, she is actually a caring woman with a warm, domestic side. As a pilot, she demonstrates sharp judgment and outstanding sniping ability. She pilots the F-15E Strike Eagle, an escort mission craft. Rank: Second Lieutenant.

The commander of the United Chinese Front's Baofeng Test Flight. She has a very aggressive personality and harbors a strong sense of rivalry, particularly toward the Argos and Idar Test Flights. Her combat style in a TSF is also aggressive and forceful, specializing in close-quarters combat using a long blade. She is admired and called "Big Sis" by her subordinates. Her close-quarters combat skills are top-tier. Her piloted craft is a close-combat capability enhancement test model of the J-10. She is half-Taiwanese and half-Chinese, born in Taiwan. Her specialty Mapo Tofu is at a lethal spice level. Piloted unit: J-10 Close-Combat Enhancement Test Model. Rank: Second Lieutenant.

A surface pilot belonging to the 65th Combat Training Squadron, the "Infinities." She has a cheerful and meddlesome personality but occasionally shows a stubborn side. She possesses sharp insight, which she demonstrates fully both during and outside of operations. She was a colleague of Yuuya and Leon during their time in the US military. She is Yuuya's ex-girlfriend and is currently dating Leon. She is also an old acquaintance of Vincent. Piloted units: F-15E Strike Eagle -> Raptor (F-22 Raptor). Rank: Second Lieutenant.

A surface pilot who belonged to the same unit as Yuuya during their time in the US military, where he always trailed behind Yuuya in scores. He currently belongs to the 65th Combat Training Squadron, the "Infinities." Because he takes pride in his Japanese heritage, he and Yuuya are like cats and dogs, and they fought constantly within the unit. A Japanese-American. Unlike Yuuya, he is pro-Japan. Thus, he is Yuuya's arch-rival and former colleague. He is Sharon's current boyfriend. He acknowledges Yuuya's ability (a tsundere). Black hair. His father is Admiral Kuze of the US Navy Pacific Fleet. Piloted units: F-15E Strike Eagle -> Raptor (F-22 Raptor). Rank: Second Lieutenant.

A surface pilot of the Imperial Royal Guard, which protects the Shogun's family of the Empire of Japan. Born into the Takamura family, a hereditary vassal house, she is a stiff and formal person who constantly disciplines herself so as not to stain the family name or the reputation of her father, a legendary soldier. She is dispatched to Yukon Base as the Japanese project manager for "Project XFJ." Having faced the threat of the BETA invading from the Eurasian continent at the young age of 13, she fought in the defense of Kyoto as a student soldier. Carrying the trauma of losing many comrades and mentors, she cannot hide her irritation toward Yuuya's critical attitude toward Japan, seeing him as someone sharing the same ethnic blood, leading to repeated clashes. Main piloted unit: Shiranui Second Phase 3 Unit 2. Rank: First Lieutenant.