Gabriella Hepburn

Well Gabriella isn't among the main characters, just a side caracter encountered during an arc, but I enjoy her style so...

She's a mechanic, working on heavy vehicle most of the time, always with dirt on her hands and face, not very feminine. The blade she toss' is about 40kilos, she engineered it herself. With a sistem of engine and gears she carries on her lower back, she can toss and spin that heavy blade easily and reel it back with a cable. She never actually uses the sword as a sword, it's more of a chain/sickle fighting style.
The blade has many "options", like producing flammes, but I don't want to get in the detail to much, it's boring.
So yeah, Gabriella is a funny tomboy who knows her way around machines.