As a devil familiar, Plumede appears as a small, dark-colored figure with horns, wings, and a forked tail.
After Nacht Faust interrupts a captains meeting, he summons four masked beasts to stop the captains from attacking him, with Plumede holding back Nozel Silva. After Julius Novachrono vouches for Nacht, the captains relax and the beasts disappear.
When Asta defeats Liebe and insists on forming a contract of equals with the devil, Plumede appears alongside Gimodelo and the other devils. The devils cling to Nacht's head and shoulders as Nacht enters the circle and compliments Asta's choice. Plumede and the other devils disappear when Gimodelo merges with Nacht to continue Asta and Liebe's training.
After Nacht admits defeat, he leaves behind Gimodelo to continue Asta and Liebe's training since their union needs more work. The devil is terrified of the possibly lethal attack again, and Nacht's other devils comfort Gimodelo.
While Jack the Ripper fights Dante Zogratis, Plumede peers out from the shadows of Langris Vaude and Rill Boismortier and then reports back to Nacht. Suddenly the roots of Tree of Qliphoth burst forth, and Nacht merges with Plumede so that he can peer through the shadows. The first gate to the underworld opens, and two devils emerge. Naamah attacks Nacht, but Plumede's characteristic "Agility" allows Nacht to evade. Plumede shakes in terror of the two devils. When the situation worsens, Nacht comes up with a plan and asks Plumede to die with him. Once Walgner returns to Nacht, he switches to Unite Mode: Gallus and pulls Naamah and Lilith into another part of the castle. There, Nacht switches back to Plumede and traps the devils in Dark Prison Hunting Ground. Nacht dodges around the devils' streams of fire and ice. After an attack of Unite Mode: Equus proves ineffective, Nacht switches back to Felis and resolves to stall the devils.
The devils eventually pierce Nacht with several needles of burning ice. Nacht decides to surpass his limits and assimilates both Plumede and Walgner. With the increased magic power, Nacht creates Monument of Atonement, trapping and sealing away himself, Naamah, and Lilith. However, the devils break out of the seal, and Plumede's and Walgner's broken masks lie in pools of shadow.
- Agility 「俊敏 Shunbin」: When Plumede assimilates with Nacht via Unite Mode: Felis, Nacht's physical speed is greatly enhanced.
|Lucifero • Megicula • Lilith • Naamah • Lucifugus|
|Gimodelo • Slotos • Plumede • Walgner|
|Asta • Nacht Faust|
|Dante Zogratis • Vanica Zogratis • Zenon Zogratis|
|Asta • Charmy Pappitson • Finral Roulacase • Gauche Adlai • Gordon Agrippa • Grey • Henry Legolant • Luck Voltia • Magna Swing • Noelle Silva • Secre Swallowtail • Vanessa Enoteca • Zora Ideale|
|Gimodelo • Liebe • Plumede • Slotos • Walgner|