Name: Rust
Species: Half metal Pegasus.
Cutie Mark: Used to be a wrench, is now blank.
Additional information: Rust used to be a Guard in Canterlot, She was injured during the wedding incident and subsequently lost her wings. Through the magic of Equestrian medicine, Rust received new wings and metal replacements for her missing bones. After this Rust was so enraged she went to the Changeling nest, intending to burn it to the ground, but when she got there she saw the starving Changelings and was so moved she decided to secretly bring them as much love as she could.
Special talent: fixing broken objects.