Initially presented as a silent, doll-like figure controlled by the antagonist Dispel, Silky mimics his words like an emotionless puppet. This facade of subservience proves deceptive. Following her destruction of Dispel, she emerges as the series' primary antagonist, shedding her submissive guise to reveal a strong will, scheming nature, and power-hungry personality. She commands living toys of her own creation – Eros, Muse, and initially Dispel – deploying them to thwart Noelle's attempts to become an angel at every turn, though her precise motivations remain obscured for much of the series. Her personality shifts dramatically between doll-like calm and violent "Cute and Psycho" outbursts; she becomes destructively enraged, often setting things ablaze, particularly if her halo falls off.

A critical revelation recontextualizes Silky's existence and opposition: she, Noelle, and Mikael originated as three parts of a single shattered angel-egg, their fates intrinsically linked. They must become angels together or not at all. Silky staunchly resists this destiny, declaring "I won't become an angel!" and actively fighting Noelle and Mikael, rejecting the angelic path to maintain her independence and power. Her connection to the other fragments is deep; Mikael, representing the original source, even attempts to absorb or fuse with Silky and Noelle.

Her relationships further define her. Residing in a dark, indefinite space, she wields powers of illusion and creation, primarily animating her toys. Eros obsessively seeks her unreciprocated affection, while Muse serves reluctantly, highlighting her isolation and need for control. Her fixation on thwarting Noelle borders on obsessive hatred.

Silky's arc culminates in the finale. Facing the impossibility of escaping her shared fate, she is dragged unwillingly to join Noelle and Mikael in becoming angels. Confronting potential erasure for her resistance, Noelle persuades her to accept their unified destiny. This leads Silky to reluctant redemption. Instead of dying, she achieves redemption through acceptance, transforming alongside the others into a shared happy ending. Physically, Silky possesses gray hair reaching her chest, red eyes, and often wears an elegant gothic lolita style, especially in her initial doll-like guise.