The Older Sister Spider Demon was a member of the Spider Family.
Appearance
She looks almost identical to her "Younger Brother" Rui—pale white skin, snow-white hair, pure white eyes with only silver pupils visible. Like the rest of her "family," she has distinctive red dot patterns scattered across her face. But this wasn't always her look. Her original form featured black hair, slitted cat-like eyes, and grayish skin, before Rui forced her to transform and become part of his "family."
Personality
The Older Sister stands out as the most cautious member of the group. Rather than dive headfirst into fights with Demon Slayers, she prefers to hang back and observe—which stems partly from genuine cowardice. She's shown as genuinely afraid both of combat and of standing up to her "family's" internal chaos. When the Mother Spider Demon was being brutally abused by Rui and the "Father," the Older Sister just watched and glared coldly instead of intervening.
Deep down, she actually resents her "family." She's convinced they're all idiots for following Rui's orders and believes she'd have been better off alone. Still, survival matters more than principles to her. She'll do whatever it takes to stay alive—including attempting to manipulate Shinobu Kocho with sympathy despite knowing she's a Demon Slayer. She even fell for Shinobu's false promise of mercy, becoming gullible enough to confess how many people she'd killed.
Content compiled by AnimeList.moe from publicly available sources.
