Petra Mace / Sable — kaleb.one

At a Glance

Field	Value
Full Name	Petra Mace
Hero Name	Sable
A.E.G.I.S. File	Not on file (flagged as unidentified electromagnetic interference anomaly)
DOB	TBD
Age	17
Birthplace	Riverside Ward, Halden City
Physical	5’4”, dark hair kept pulled back, always dressed like she’s ready to move. Looks like half the girls in Riverside Ward until she doesn’t. The tell is her eyes — she’s always clocking exits.
Affiliation	Independent — no formal ties
Status	Active — unregistered

Powers

Electromagnetic Manipulation

Petra generates and directs electromagnetic fields with moderate but growing precision. In practice this means two things.

She can pull or push ferrous metal — objects, weapons, structural components — with enough force to be decisive in a confrontation. A knife leaves a hand before the decision to drop it is made. A door doesn’t open. A fire escape doesn’t hold.

She can generate a sustained field that repels or locks people in place if they’re wearing enough metal to work with — belt buckles, zippers, body armor, firearms. It doesn’t need to be much. Most people on the street are carrying something. The field isn’t invisible but it’s silent, which is worse. People feel it before they understand it, and the moment between those two things is when they get scared.

Range is roughly fifteen feet at full concentration, less when she’s splitting attention. She’s been pushing the ceiling steadily since the power manifested and doesn’t know where it stops yet.

What it looks like in action: The silence and the specificity. She doesn’t grab everything in the room. She takes exactly what she wants from exactly who she’s looking at. That precision on a seventeen-year-old reads as wrong to anyone with working instincts.

The cost: Electronics near her glitch when she’s not careful — phones, cameras, anything with a sensitive circuit. She’s burned out three of her own phones in two months. It also means she registers as a recurring interference anomaly on camera systems across Riverside Ward and the Ironworks. Sloane Callahan’s Weaver drones have flagged the pattern twice. Sloane hasn’t told anyone yet because she hasn’t figured out what she’s looking at.

Background

Petra’s younger brother Mateo, fourteen, got caught in the edge of a conflict between two Ironworks crews six months ago. He wasn’t a target. He was just there. He spent three weeks in Halden City General with a fractured orbital socket and a story that kept changing every time the police asked him to tell it.

Nobody did anything. The Alliance was occupied. A.E.G.I.S. doesn’t work street level. The police took a report.

Petra decided someone had to, and then decided that someone was her. She spent two months figuring out what she could do with what she had before she went looking for someone who could close what she opened.

She found Eli Crane in a gym in the Ironworks at eleven o’clock on a Tuesday night and told him she had a job. He told her to leave. She came back Wednesday. And Thursday. He said yes on Friday, which she’d calculated as the likely outcome.

Character Profile

Petra is completely certain she’s doing the right thing. She is doing the right thing. The part she hasn’t examined is what happens when her methods catch someone she wasn’t accounting for.

She plans with confidence and executes with precision. The problem is that confidence and precision aren’t the same as completeness. She knows what she knows. She’s built a careful picture of the crews pressuring her neighborhood. What she hasn’t built is a picture of everyone else inside the same spaces — the people who are just there, the way Mateo was just there.

She doesn’t see the parallel yet. That’s the engine.

Key Tensions

Tension	Description
Certainty as blind spot	She’s right about the target. She hasn’t accounted for Cora Reyes in the ground floor of the building on their list. She doesn’t know Cora exists.
The cost of the power	The headaches from sustained field use are getting worse. She hasn’t told Eli.
Friction with Eli	He thinks she underestimates variables. She thinks he uses risk assessment as an excuse to hesitate. They’re both partially right. They argue about this in the middle of jobs.
Sloane’s anomaly flag	Her electromagnetic interference has already shown up on Arachne’s drones twice. The clock is running.

Relationships

Person	Relationship
Eli Crane / Fault	Partner. She sought him out, calculated he’d say yes, and was right. That dynamic hasn’t fully resolved — he knows she ran the odds on him and isn’t sure how he feels about it.
Mateo Mace	Younger brother. The reason this started. He doesn’t know what she’s doing.
Riley / Recluse	Doesn’t know he exists yet as a specific threat. Riley has noticed the pattern she’s leaving.
Sloane / Arachne	Doesn’t know Sloane exists. Sloane has flagged her interference signature without knowing whose it is.

Voice & Dialogue Notes

Precise. Doesn’t waste words.
When she explains a plan she sounds older than she is, which unsettles people who then feel foolish for being unsettled by a seventeen-year-old.
Doesn’t raise her voice. Has never needed to.
Gets quieter, not louder, when she’s certain about something. The certainty is the tell.

Open Questions

When did her power manifest — was it before or after Mateo’s injury?
What is her home situation — parents, stability, who would notice if something went wrong?
Does she have a hero name she’s given herself or is “Sable” external — something people started calling her?
How does she find out about Cora Reyes, and what does she do with that information?

Midjourney Prompt

Teenage girl, 17, white, sharp features, dark hair pulled back tight, alert pale eyes always scanning the room, dressed practically in dark layered clothing, standing in a rain-slicked Riverside Ward street at night, subtle metallic debris floating in a slow orbit around her outstretched hand, expression calm and certain, urban noir atmosphere, city lights reflecting off wet pavement, graphic novel illustration style --style raw --ar 2:3 --v 6

Last updated: March 2026