Eva's sister Noni frequently hangs out with Ghost-types and other spirits at night when her own ghostly abilities are active, one night a fragment of a Spiritomb separated from the rest and followed Noni back to her house, where it became trapped inside Snorlie of all things.


The Spiritomb initially infuriated at being trapped inside an oversized doll that a girl spends too much time with, at first it saw this as a worse fate than being trapped with the rest of the Spiritomb spirits.


But as time passed the Spiritomb began to change, Eva's affection and love she gives to Snorlie on a daily basis began to affect it, the Spiritomb grew to appreciate being treated with kindess, even if Eva is completely unaware that it is there inside Snorlie.


Now the Spiritomb sees herself as actually Snorlie and is always looking after Eva despite Eva not knowing of her existence. The Spiritomb is too weak to move Snorlie and she cannot be seen by the living, but Noni quickly noticed her presence and agreed to keep her a secret.