Navy

Navy is the Rebel Army's lead scientist and a major character in Metal Slug Attack.

Past
Navy originally worked alongside the Professor while he was still with the Rebel Army. After the Professor defected to the Mars People, Navy was promoted to head of the Rebel Army's science division.

Navy is also at some point converted Vita into a cyborg after she was heavily injured in a mission for the Rebel Army

Extra Ops
In the Extra Ops story "Mad Scientists", Navy's lab is attacked by the Professor, who sought to learn more about Vita, but Navy managed to successfully repel his attack..

In "Sadistic Emotion", Navy and Izabella lead an attack the Ptolemaic Army in order to capture and interrogate their new supply officer Sisilia, whom Izabella had taken an interest in. Along the way, Navy fights and manages to defeat Dragunov and Veronica, but the two are restored to full power by Sisilia's music has restorative powers. Realizing they are outmatched, she retreats and drags Izabella away with her.