Percier

Percier is a character introduced in Metal Slug Attack, she is the "eternal assistant" of Professor, she is also the main antagonist of Metal Slug 11 alongside her future timeline counterpart.

Profile
Self-proclaimed Professor's assistant. She did drug researches in the Rebel Army's laboratories but she quit and reached Mars in order to follow the person she loves. She's jealous of the Martians to which her beloved shows affection, and wears a special costume in order to oppose them. For the Professor, she's considered to be boring.

Story
Metal Slug 9 (Lord Moogoo)

Percier helped the Professor to break free Morden out of his prison. She helped the Regular Army by using alien chemicals that could reveal hidden traps laid on Ptolemaios well guarded home planet.

She helps attack Ptolemaios forces in a final battle with a large army of Martians.

Before Metal Slug 11

Percier was behind Professor in everything he did, for some strange reason she hasn't noticed about her "master" during his last months of life before his assassination in hands of his new boss.

Metal Slug 11

Percier notices that her "master" have died, so she alongside a Neo Mars People she found and make her friend decides to avenge his death, the first "guilty" she thought were the responsibles of his death was PF Squad.

On Mission 4 she fights PF Squad, after her defeat, she send them to the future.

She and Neo Mars People traveled to the future and meets her future timeline counterpart to join forces to stop PF Squad once and for all.

As her last attempt, she tried to help Future Percier but unfortunatelly she died by Future Abigail's laser from her robots.

Metal Slug Appearances
Metal Slug 11

Percier is the main antagonist alongside her future timeline counterpart.

Metal Slug Fighters

She is one of the characters of the game.