Halle is a new character introduced in Metal Slug Attack.
Halle is an amateur radio operator who likes to explore the unknown. One of these excursions eventually brought her with a Mars People Pocket, which she bonded with. She seems to be fairly content with serving the Martians.
Should her life be threatened, the Mars People Pocket will call the Rugname to quickly move her away from the battlefield.
First appearing in "Encounter of Unknown", she recalls meeting the Mars People Pocket and joining the Martian Army. She is later woken up by Clone Abby, who leads her to the Professor. She is given her first task, which is to gather information on a new Cabracan model being built by the Rebel Army. Clone Abby accompanies her, though the Mars People Pocket stays behind to speak with the Professor.
During the mission, the two are caught by Beatriz, who attempts to use the Cabracan on them, but the Mars People Pocket calls in the Rugname and annihilates it. Halle and the Mars People Pocket communicate, and the latter believes that she understands what it is saying, only to be dismayed when she fails to understand its last sentence.
- She is the fourth female character to wear a glasses. Other beings are Fio Germi, Towa, and Izabella.
- Halle is the only human affiliate that doesn't understand the Martian language.