Spider Demon (Father)

Blood Demon Art: Limb Growth

He can grow multiple extra arms at will to overwhelm opponents with simultaneous strikes, in addition to the thread-manipulation abilities shared by Rui's spider family, before he is killed by the Hashira at Mount Natagumo.

The Spider Demon Father is an unusually large, muscular demon capable of sprouting additional arms from his torso, giving him a bloated, many-limbed silhouette in battle.

He is aggressive and domineering within Rui's forced family structure, using his size and extra limbs to intimidate both his 'family' and his enemies.