Caroline (nicknamed Mechageek) is a new character introduced by Metal Slug Attack.
A young mechanic within the Ptolemaic Army. She dresses in a manner similar to Dragunov, with the addition of a scarf alongside her engineering gloves and goggles. She first appeared to help Yoshino during MSA's Flying Ace event.
In battle she is accompanied by the "F-502 ShootingRay", a scale model of an aerial Ptolemaic boss encountered by the Regular Army commandos during Metal Slug 5. The smaller ShootingRay is remote controlled, and she directs its attacks using a modified NeoGeo Pocket.
Caroline is teasingly referred to as "the Mechageek" by Yoshino, though she doesn't seem to mind.
She's often a troublemaker, as Dragunov finds it rather hard to babysit her because of her admiration of machines and her determination to get them. She does have some influence in the army, as she managed to convince her to spare Towa because of her similar mechanic skills.
She later appears in the Extra Ops "No Limit", where she tests out her new Augensterm and wounds Allen O'Neil. When Destrade comes to attack, she is unable to defend herself and is left at her mercy. Yoshino arrives and saves her, though she has Dragunov discipline her for disobeying orders.
Then she makes another appearance in the Extra Ops "Eternal Way", where she helps Towa on a mission. Upon returning, she gets in trouble again and is dragged by Yoshino for disciplinary action.
Caroline first appears in Another Story in "Scrap Life", where she helps Yoshino and Dragunov acquire the Big Shiee.
In the story "The Dream of the Prodigious Mechanic", Caroline disobeys orders and yells back at Dragunov. When she realizes what she had done, she runs off. Yoshino and Dragunov apologize and assist her in acquiring the Crablops. She agrees to a one month layoff imposed by Dragunov, but finds herself unable to complete it.
In the story "Cloak of Darkness", she and Towa go on a mission to acquire the Tani Oh. During the mission, she encounters her first ninja apart from Yoshino, and manages to acquire the Tani Oh for the Ptolemaic Army.
- In both forms, if the machine Caroline is using is destroyed, she will get angry and "rage quit", leaving the battlefield.
- Despite her nickname given by Yoshino, none of the Extra Ops and Another Story dialogue has Caroline referred by it.