Fedeln Metzelei is a new unit introduced in Metal Slug Attack. He debuts in the “Butterfly of Disaster” Extra Ops.
Fedeln is a humanoid butterfly affiliated with the Invaders. He is the second of the Metzelei Four. He has extremely potent poison, which is capable of melting through poison-resistant body suits and masks. Unfortunately, it is uncontrollable, and its random blasts of poison have an enormous radius. As a safety measure, Fedeln is closed off from his fellow Invaders, and thus lives a lonely life as a result. He is gentle although somewhat looney due to his isolation.
During the confrontation with the Ptolemaic troops, Caroline shoots an unknown bullet at Fedeln’s wings. As if a miracle, it stopped his wings from seeping poison. Fedeln then happily puts himself on open fire. Nowan begrudgingly intervenes as she doesn’t want to be scolded by Annette for letting a vital member of their army die.
He makes a small appearance in the "Fall of Disaster" story where Schwarz calls him for a ship, but he gives her a sob story instead.
- Fedeln Metzelei is the second male Space Army character to be introduced since the Professor's debut.
- He is the second Metzelei to be introduced.