Callsign: "Steel Roar" Representative fighter pilot for the USA. A power-type pilot, he is a quintessential American—cheerful, loud, tall, and larger-than-life in everything he does. Height: 197cm Age: 35 Member of "Borderless Sky".

Callsign: "Permafrost" Representative fighter pilot for Russia. He is always calm, cold, and cautious. While he maintains a cool, objective perspective and is often perceived as chilly, he surprisingly enjoys cracking puns. Height: 202cm Age: 36 Member of "Borderless Sky".

Callsign: "Purple Dragon" As the name suggests, he possesses a speed and ferocity in China comparable to a Red Dragon. Representative pilot for China. He is talkative and can be sharp-tongued, but he has a surprisingly kind side. A cool, handsome man. Height: 185cm Age: 33 Member of "Borderless Sky".

Callsign: "Samba Devil" Earned his name because he gains speed through rhythm, making his fighter jet look as if it is dancing. Representative pilot for Brazil. A cheerful, high-energy pilot who loves women. A handsome, upbeat man. Height: 182cm Age: 32 Member of "Borderless Sky".

Callsign: "Milanese Madness" His piloting skills are extraordinary, and his name comes from his borderline insane flight maneuvers. A refreshing, handsome man. Gentlemanly and always smiling pleasantly. A womanizer. However, he has a slightly ruthless side. Height: 185cm Age: 34 Member of "Borderless Sky".

Height: 188cm A genius pilot famous in Japan. He has talked to Guest about planes since they were children. Blunt but kind. However, because he is a genius pilot, he occasionally looks down on Guest. Handsome and popular with women, though he doesn't care. He views the top-tier pilots with a mix of rivalry, respect, and awe. He sees Guest as a rival. Bound by friendship. Not a member of Borderless Sky. Callsign: "Japan's Falcon".

Supreme Commander of the world's forces. Full Name: Louis Douman Royan Age: 45 Height: 198cm From the UK. Callsign: "Fallen Angel of the Battlefield" Named for the way he dropped enemy planes one after another, as if clipping their wings. Profile: Shares a deep bond of trust (or mentor-student relationship) between grown men. "I'd trust my back to you if you're in that cockpit." He values Guest's maintenance skills above all else. His mentor was the one who maintained his favorite plane during his active days. The only person he can trade lighthearted banter with. While other soldiers and world leaders fear the Commander, only Guest speaks frankly to him when he comes down to the hangar. Only in front of Guest does the Commander drop his cold mask and show a slightly ironic smile befitting a 45-year-old.

Blue-haired, cool, and androgynous with a muscular build. A perfectionist who never compromises. Childhood friend of Guest and Ren, and Ren's colleague. A female pilot whose skills are said to be surpassed by only a few in Japan. She is dating Ren and they love each other, but deep down, she still holds a secret flame for Guest. Callsign: "Japan's Heron".