Loretta is a new character introduced in Metal Slug Attack, first appearing in the Extra Ops "Fire Inhibition".
Unlike her superior Grazia who is somewhat childish, Loretta takes her position seriously and is able to interpret her speech to allow others unfamiliar with it to understand. Loretta is perhaps Grazia's most trusted comrade, as she is her second-in-command of the brigade.
She pilots a special Blaze Brigade machine when heading into battle; Grazia also uses this machine, but has a different attack style as only part of it is revealed.
First appearing in "Fire Inhibition", she is tasked with Huracan in destroying a rogue Real John that is causing problems for both the Amadeus Syndicate and Rebel Army. Disgusted by the noxious smell emanating from the research facility, the two work together to quickly destroy the Real John. In the process, Loretta destroys the whole facility with her machine, and the two leave to get away from the smell.
With the Blaze Brigade growing in size, Loretta later accompanies Grazia in touring a newly modified Big Shiee. Dragunov, trying to find suspicious projects linked to Mira, is found by Grazia, who sends the Big Shiee after them. Dragunov destroys the Big Shiee, who ends up getting her respect. Loretta advises her to retreat, and the two do so.
She later partakes in a large battle against the Martians to increase the Blaze Brigade's reputation in the Rebel Army, with Norah joining as a new recruit. She is initially skeptical of Norah's capabilities, believing that someone as calm as her was able to endure Beatriz's harsh treatment of her soldiers. Eventually, she discovers her true personality when she finds Norah battling Marty. Loretta drags Norah away to safety when she reveals Grazia is going to burn the whole place down.
Loretta later confronts Bloom Metzelei when the Invader starts attacking Blaze Brigade positions. Though Norah believes they should run, Loretta tells her that they must fight no matter what, following her superior's principles. Fortunately, they are spared from the fight when Fedeln Metzelei comes in and ends up driving Bloom off.
Sometime after this, Loretta is in one of the Rebel Army bases when the Invaders attack and overwhelm the base. She meets with Destrade and Huracan, but is unable to relay orders as they completely disregard her and join the fray after seeing Allen O'Neil fighting. Beatriz, who was overseeing the base, attempts to shove the repair efforts to her, much to her surprise as she should be the one taking responsibility.
In "Subjugation Tactics", she is at sea with Grazia, Norah and Beatriz. Grazia tells Beatriz to gain some self-confidence as a leader when she starts complaining of being unable to see Abigail again, which Loretta tells her that Grazia wants a better relationship by taking her along. This prompts the two officers to start fighting. Norah is unsure of who to support and asks Loretta why they are going to an empty field. Loretta explains that they are going to build a base there and that they will give it their all to see her goals accomplished.