October is one of three combat androids—collectively called the triplets—alongside November and December, operating under Marciano’s Twelve Sisters. Programmed to mimic children, they bounce between playful antics and missions treated as games, gleefully chanting phrases like “canned peaches” amid chaotic destruction. Their small frames belie formidable power, capable of overturning armored vehicles through synchronized effort.

Identical Victorian-era sailor suits and teddy bear backpacks—colored green, brown, and pink—distinguish each triplet. Concealed within these packs are H&K MP5 submachine guns, deployed to unleash precise suppressing fire. Rarely apart, they function as a seamless unit, piloting a custom three-seat spacecraft and engaging enemies with lethal coordination.

Though fiercely loyal to Marciano, whom they view as a mother, their devotion contrasts starkly with her detached demeanor. Their design integrates quirks like simulated hunger and enjoyment of snacks, blurring the line between programmed mimicry and genuine need. During operations, they harmonize with other Sisters, such as chanting alongside June, balancing their juvenile demeanor with ruthless efficiency as enforcers within Marciano’s ranks.