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Information about his appearance in Nazo Puyo and Rulue's Iron-Fist Spring Break are missing.

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Other NamesDemon Servant
Spanish Siervo Infernal
Personal Info
BirthdayNovember 25
Notable Appearances
First appearanceMadou Monogatari: ARS
Latest appearancePuyo Puyo!! Quest
Puyo Puyo!! Quest information
Demiserf Demiserf ver. Swartz Aptitudinal Demiserf

Demiserf Is a character who made his debut in the Madou Monogatari series that antagonizes Rulue. He first appeared in Madou Monogatari R as one of Count's subordinates.



Demiserf bears golden eyes and short white hair with bangs that swoop around his horn. As a demon, he of course has features to reflect this: such as having a horn, pointed ears, and being depicted with having fangs in art where his mouth is open. He dons a blue robe-like attire with a white or gold trim,fingerless gloves, and black pants.

His design remains mostly untouched in Puyo Puyo!! Quest. His hair now features sidetails, white cuffs have been added to his sleeves, and his belt has been swapped out for a red tassel.


Demiserf is often described as slightly arrogant and speaks with an overly pompous tone. He seems to always be plotting world domination, but said plans tend to never work out. It is brought up on multiple occasions that not many people know who Demiserf is, which frustrates him greatly. He is shown to be extremely prideful of himself, as he not just prides his power, but he also finds pride in his demonic name and horn.


Most of Demiserf's appearances are only in stories that focus on Rulue. Every interaction the two have had consisted of Demiserf attempting to hinder Rulue, and Rulue responding to this by using her brute force. In Demiserf's Puyo Puyo!! Quest monologue text that he is troubled by a certain martial artist, implied to be Rulue.[1]


Madou Monogatari

Demiserf debuted as a random encounter in Madou Monogatari ARS, appearing exclusively in Rulue's story. He, alongside Vampire and Water Element, served for Count and went along with his plan to go against Satan.

Nazo Puyo

Rulue's Iron-Fist Spring Break

Puyo Puyo!! Quest

Img170606 l.png For this character's stats in Puyo Puyo!! Quest, see PPQ:Demiserf.

Demiserf is available as a blue card, added on February 11 2015. Although he does not share a series with any other character, he did make his debut in the game alongside Succubus.


Madou Monogatari

Puyo Puyo



  • Despite his name, whether or not he serves for anyone is unknown.
  • Although he is shown to serve for Count in Madou Monogatari R, he is still referred to as "Demon Servant" even in games where Count is not present.
    • Whether or not he is currently affiliated with Count is unknown.



  1. PPQ:Demiserf/★5