Emma is a new character introduced in Metal Slug Attack.
She is an inventor who works hard for the Rebel Army, though she admits that if she had the chance, she would join the Amadeus Syndicate. She is fascinated with machines and even created a contraption allowing her to use a wide array of attacks. Due to her ability to create weapons from recycling leftover materials, she is lauded by several members of the top brass when they are given a strict budget. This has also allowed her to become Navy's assistant.
She wears a baggy dress to carry tools in and also prefers to wear hypnotizing glasses.
First appearing in "Auto Battle", she accompanies Allen Jr. and Julia to a practice simulation with the Amadeus Syndicate's robotic forces, led by one Amadeus built Shoe & Karn. She admires the syndicate's ability to create an army from machines. During the simulation, she helps Allen Jr. create additional weapons after he runs out of ammunition for his own. After the simulation is over, she goes off to report the results to Navy.
Later on in "United Front the 9th", she works alongside Navy in creating a Golden Nokana. However, they are unable to find anyone to pilot it. Emma is disgusted when Vita tells her that one of the reasons why the soldiers refuse to is the cramped ball turret, stating that the person must have something against recycling since all Iron Nokana models have a ball turret.
- She is the fifth female character to wear glasses, the others being Fio Germi, Towa, Izabella, and Halle.
- She is the first mechanic for the Rebel Army.