A particularly powerful soldier in the Invader Army, Schwarz Metzelei was transferred from another galaxy to Earth, as part of Annette's plan on attacking the planet. Her extremely aggressive personality with an insatiable appetite can make her dangerous to her allies, though she fortunately able to tell friends from enemies. She uses her tail as a means of fighting her enemies, and is capable of using it to suck the life from her enemies to replenish herself. Schwarz is presumably one of the Top Four, some of the strongest Invaders in the army.

Metal Slug
Metal Slug is a series of run and gun video games originally created by Nazca Corporation before merging with SNK 1996 after the completion of the first game in the series. Spin-off games include a third-person shooter to commemorate the 10th anniversary of the series and a tower defense game for the mobile platform