Okay, here is some facts about Celty:
she is a Dullahan (headless horseman, fae grim reaper)
she is nigh unkillable
usually a Dullahan would carry their head around with them and it would be connected to the body via a soul, Celty had her head cut away and stolen by a mad scientist using an ancient cursed blade
she had the spirit that serves as her horse possess an old motorcycle rather than a horse
she controls and makes things with shadows, including a giant friggin' scythe that seems to knock people out without killing them (mental stress??)
she is drawn to seek and recover her head...but has also started to give up and is also worried that if she finds her head, that it will make her a different person
Here's what I'm thinking so far:
High Concept: The Headless Black Biker
Trouble: My Head is Missing
Background: Holes in my Memory
Rising Conflict: My Possessed Black Bike
The Story: Transporter Celty
Guest Star: Everyone's Cool Big Sister (Shizuo Heiwjima)
Guest Star: Are These Human Feelings? (Shinra Kishitani)
Channeling: Darkness (-2)
Mythic Recovery: Catch: Unknown, Celty theorizes she can be killed through her head somehow, and its part of why she wants to recover it even when she fears that recovering it will make her a different person and end all the human friendships she has. (-6)
made her mythic recovery because it is apparent that you CAN hurt her...it's just keeping her down that's nearly impossible
Also, might put in a severe consequence of "Terrified of Traffic Cops and Gray Aliens" in there somewhere
Her supernatural driving skills could be invocations of her Black Biker, Possessed Black Bike and Transporter Celty aspects
Skills:
Driving +5
Conviction +5
Rapport +4
Discipline +4
Weapons +3
Empathy +3
Investigation +2
Resources +2
Endurance +2
Contacts +1
Alertness +1
Athletics +1
Fists +1
Stealth +1