AIB (Alien Investigation Bureau)

Main article: Zena

Zena (ゼナ, Zena) is an Alien Shadow that was formerly a drillmaster on his home planet, Planet Shadow. After defecting at an unknown point in the past, he came to lead AIB.

Main article: Moa Aizaki

Moa Aizaki (愛崎 萌亜（モア） Aizaki Moa) is a childhood friend of Riku Asakura. She and him used to play together. Now, she works as an agent for AIB, along with her partner Zena. She hides her true job by also being a sales manager at Nico Nico Life Insurance.

Main article: Tri-Tip

Tri-Tip (トリィ＝ティプ Torī-Tipu) is an Alien Pitt who joined the AIB after losing her pet Eleking.

Main article: Kuruto

Kuruto (クルト, Kuruto) is an Alien Shadow who was taught to fight by Zena as a member of the Gabra Cano, Kuruto arrived on Earth and was infuriated by how his superior had chosen not to follow the race's plans to invade Earth. Becoming a temporary member of AIB, he unleashed the bioweapon Zegun to attack humanity, only to be killed when Zegun was destroyed by Geed and Zero.

Godo-Wynn (ゴドー＝ウィン Godō Win) is a member of the Godola race that sought to infiltrate AIB to steal Little Stars, which he planned to use to benefit his kind. Arriving on Earth with a subordinate, he joined AIB as a temporary member until his plan was foiled by Laiha Toba. Growing giant, Goddo-Wyn rampaged through Tokyo before Geed came to confront him. The two fought until Goddo-Wyn was suddenly confronted by Ultraman Belial, who killed him in cold blood. Following Goddo-Wyn's death, his subordinate was rounded up by Zena and deported back to his home planet.