A BOTTLE SHIP Security Guard (ボトルシップの警備員) is, as the name would imply, a security guard of the BOTTLE SHIP. They seem to be underlings of the ringleaders or possibly even ringleaders themselves. BOTTLE SHIP Security Guards are only seen in Metroid: Other M, towards the end, and not in physical form. Dr. Madeline Bergman described to Samus Aran that two of these guards restrained MB, who was observing the Breeding Room shortly after little birdie's murder of a Lab Worker, as they were bringing her to have her AI program altered. Although MB pleaded for help, Madeline knew that it had to be done, and did nothing to stop them. This drove MB into a furious rage, and because of her super strength as an android, she easily overpowered the security guards, and thus caused the BOTTLE SHIP to suffer widespread damage. Samus, the Galactic Federation, Madeline, and the 07th Platoon all assisted in the eventual destruction of MB.
Security Guards wear clothing covering the entire body, as well as a helmet with a visor, made of reinforced plastic and a "gummy material", protective mouth mask and rubber gloves. Their uniforms are similar to the hazmat suits worn by the Federation surgeons who operate on Samus in the opening of Metroid Fusion.