United Nations Kurobe Laboratory
Hiromi Shirahane (白羽 洋海, Shirahane Hiromi)
Voiced by: Kanako Tōjō (Japanese); Anne Yatco (English)
Yukina's mother and the Chief Researcher at the UN Kurobe Laboratory. She was lead designer of the currently under development “GAUS (Gravity Attenuated Upright Shell)”, units that are two-seater mecha operated by a pilot and navigator. She's quite the overbearing mother type, but lacking in motherly qualities.
Tom Borden (トム・ボーデン, Tomu Bōden)
Voiced by: Ryohei Kimura (Japanese); Todd Haberkorn (English)
The 31-year old pilot of GAUS 1 and a member of the U.S. Marines. Though he has a rough personality, Tom is the combat leader of the GAUS pilots. During the counterattack against Efi Dorg he becomes the pilot of the Longarm.
Liu Shenmei (劉 神美, Ryū Shenmii)
Voiced by: Hikaru Ueda (Japanese); Reba Buhr (English)
The 27-year old navigator of GAUS 1. A very reserved person, Shenmei speaks little and helps to balance Tom's headstrong nature. She later becomes the pilot of GAUS 3.
Toshiyuki "Sebastian" Mozumi (茂住 敏幸 (セバスチャン), Mozumi Toshiyuki (Sebasuchan))
Voiced by: Taiten Kusunoki (Japanese); Tony Azzolino (English)
The 38-year old navigator of GAUS 2. A captain in the JSDF, Sebastian is Sophie's butler. During Efi Dorg's largest assault, he sacrifices himself in an attempt to kill Mirasa and prevent her from attacking Muetta and Sophie, but despite being able to stop Mirasa, she manages to survive. It is later revealed that he also survived as well.
Minoru Aramata (荒俣 稔, Aramata Minoru)
Voiced by: Kōichi Makishima (Japanese); Michael McConnohie (English)
Chief Engineer at the UN Kurobe Laboratory. He is an expert on solid state physics and geology, and was in charge of excavating the artifact.
Arthur Graham (アーサー・グラハム, Āsā Gurahamu)
Voiced by: Katsuyuki Konishi (Japanese); Jamieson Price (English)
Commander of the defense forces at UN Kurobe Laboratory. A Major in the British Army and former member of SAS, Graham is earnest in his work and not just out for promotions.
Rita Ferreira Mendes (リタ・フェレイラ・メンデス, Rita Fereira Mendesu)
Voiced by: Lynn (Japanese); Christine Marie Cabanos (English)
Operator in the defense control room. Rita wears glasses and has a positive demeanor. After having been possessed by an electronic parasite, she cooperates with other controlled humans in activate the Pivot Stone; she's freed when the UN forces manage to retake the UN Kurobe Laboratory, but since the humans do not have the necessary technology to reverse the parasites' influence she remains in a vegetative state till 2021, when she seems return to herself much to the surprise of her friend Beth.
Elizabeth "Beth" Butler (エリザベス・バトラー (ベス), Erizabesu Batorā (Besu))
Voiced by: Juri Kimura (Japanese); Julie Maddalena (English)
Operator in the defense control room. She's big in height and heart.
Paula Kowalczyk (ポーラ・コヴァルチック, Pōra Kovaruchikku)
Voiced by: Rina Satō (Japanese); Laura Post (English)
A researcher in the development division at the UN Kurobe Laboratory. She has a PhD in material engineering and makes use of technology reverse-engineered from the Black Relic.
Girolamo "Giro" Casiraghi (ジローラモ・カシラギ (ジロー), Jirōramo Kashiragi (Jirō))
Voiced by: Hiromichi Tezuka (Japanese); Keith Silverstein (English)
A researcher in the examination division at the UN Kurobe Laboratory. He has a PhD in electrical engineering and analyzes the Black Relic.
Jules Hausen (ジュール・ハウゼン, Jūru Hauzen)
Voiced by: Yuya Uchida (Japanese); Dave Mallow (English)
An expert on anatomy and biochemistry. He is bizarrely obsessed with his research subjects.