Her name is Eight Knuckles Stitched In Gold, callsign: Vaisravana, and she pilots The Seat of the One Who Sanctions Murder.
She's Principal Bell Ringer to the Copper-Weaving Yajna of the Temple of Coins an order of merchant monks who view money as sinful, and work to divest people from their sin.
She prays every morning by binding her hands in gold wire filigree, and drilling the thirty three forms of the Counting-by Hand. Her favorite food is pickled carrots, and she's an ace woman that's romantically attracted to self-obsessed assholes.
The Seat is an IPS-Northstar Empakaai owned by the Temple of Coins and once piloted by Gurandaim the Gold Boiler, and has been loaned to Eights for her pilgrimage to far territories, to gain influence and find trade partners.
The Seat of the One Who Sanctions Murder is operated more manually than other frames of its kind, and runs incredibly hot - requiring someone with great physical strength and stamina to operate.
Her priory of twenty acolytes travel with her to maintain the machinery, study the world, and so on, while Eight Knuckles Stitched in Gold leads the way.
EDIT: changing her title
from: Principal Blood Baptist of the Temple of Coin (cool, indicates violence, but a little vague and off theme - we can do better with more detail and explicit imagery)
to: Principal Bell Ringer of the Copper-Weaving Yajna
since the I went with Vaisravana as the callsign but then wholesale made up a religious order, I felt like it would be more give-a-shit if I looked deeper into buddhism and anchored that in better. Ghanta are bells of various sizes used in religious rites, and Yajna is a sacrificial burning ritual in which ghanta can be rung (though it looks like usually the bells rung in Yajna are hand bells).
But I like the pun of Bell Ringer being a religious role and also a Punching role, and I like the image of a mech that's operated by thick ropes and cords that you pull to make it work. And I also like to imply more of what the Temple of Coin actually does, with this idea that they're melting down copper coins in Yajna and spinning them into fabric.
Might add a little more about Gurandaim and the mech's history, because I also think it would be cool if this thing got ship of theseus'd from a bell into a mech over a period of many many years.
Folks, the mech is bitchin