I promised I'd tell you more about my oc when I finished her art, so here I am!

Name: Rusty Gear

Story: She was born in Ponyhattan, and demostrated high intelligence since she was a filly. She was a bit of a sociopath tho, and her parents were always worried about her hurting others. She had no emphathy, and was very manipulative.

She moved to the Crystal Empire to do some investigation about Crystals and the umbrum. King sombra came and slaved ponies. She demostrated intelligence and King sombra saw a tool on her, wich is why she became his personal assistant for the period he ruled over the Crystal Empire. When King Sombra was defeated by Twighlight, she was crushed by the falling castle, and the mane six saved her and helped her. She lost both legs and her left arm became useless. She also lost her right eye. She was depressed, thinking she'd never find peace again, until Twighlight went to visit her. She gave her a wheelchair and told her she could still do good. Rusty Gear, motivated by her words, used all her intelligence to recover again. Twighlight became a Princess, and Rusty Gear finally finished her prosthesis. She sweared eternal loyalty to the princess and became one of the best scientifics of Equestria.