Ghost

This Spiral is quieter and calmer than most, and prefers not to move.

That is, until autumn begins. As the leaves start to change, and the nights get chilly, she begins to stir.

As September rolls around, she's acting like a normal Spiral, and is a blur of activity, appearing to never eat or sleep.

As October arrives, all you hear for the entire month is the screeching of various theme songs, usually mixed and matched and mashed together ("SPOOKY SCARY MONSTER MASH!") and a flurry of collecting and hoarding of various sweets and materials for last minute costumes.

The day of Halloween she somehow manages to both give out candy and go Trick-or-Treating, sometimes at the same time, accidentally giving the clan she's Trick-or-Treating at some of the treats she has stashed in her sack.

After the holiday, she passes out for at least 3 days.