Sadao Maou

Japanese Name 真奥 貞夫 / サタン・ジャコブ
Romaji Name Sadao Maou / Satan Jacob
Nicknames Satan, Milord
Series Hataraku Maou-sama!
Age Unknown
Weight Unknown
Height Unknown
Date of Birth Unknown
Blood Type Unknown


Sadao Maou, also known as Satan Jacob, is the main protagonist of the anime and manga series “Hataraku Maou-sama!”. In terms of personality, Sadao is portrayed as a proud and determined individual. As the Demon King of Ente Isla, he initially had great power and authority. However, after being confronted by the heroine Emilia and her allies, Sadao was forced to retreat and found himself in the human world, specifically modern-day Japan.
Despite his circumstances, Sadao shows a strong determination to survive and adapt to his new life. He adopts the alias Sadao Maou and works as a part-timer at MgRonalds, a fast food restaurant. Sadao’s dedication to his work is evident as he is eventually promoted to a full-time position. His dedication to his job shows his responsible and hardworking nature.


Sadao Maou’s background is rooted in his position as the Demon King of Ente Isla. He was a powerful ruler who declared war on Ente Isla in an attempt to annex the four continents. However, his plans were thwarted by the heroine Emilia and her companions, causing him to retreat to the human world. This unexpected turn of events placed Sadao in a completely different environment, far removed from his former glory.


In appearance, Sadao Maou takes the form of a young man with black hair and red eyes. When he first arrives in the human world, he adopts a human disguise in order to blend in and survive. This form reflects his determination to adapt and find his place in the new world. Sadao’s appearance shows his ability to adapt and assimilate into different situations.


As the Demon King, Sadao Maou possesses a number of supernatural abilities. While in Ente Isla, he demonstrated great power and authority, commanding an army of demons. However, in the human world, Sadao’s abilities are diminished. However, he still retains some of his demonic powers, which he occasionally uses to protect himself and those around him.


Sadao Maou originated in the fictional world of Ente Isla, where he ruled as the Demon King. His arrival in the human world serves as a catalyst for his character development and the central plot of “Hataraku Maou-sama! The contrast between his past as a powerful demon and his current life as a part-time worker creates interesting dynamics and conflicts within the story.

Sadao Maou – FAQ

Who is Sadao Maou?

Sadao Maou is the main protagonist of the light novel and anime series “Hataraku Maou-sama!” (also known as “The Devil is a Part-Timer!”). He is the Demon King from the world of Ente Isla, but is transported to modern Tokyo along with his loyal general, Alciel.

What is Sadao Maou’s personality like?

Sadao Maou is initially portrayed as a ruthless and power-hungry demon, but after arriving in Tokyo, his personality undergoes a significant change. He becomes more humble, hardworking and adapts to his new environment. He is shown to be determined, responsible and caring towards others.

What are Sadao Maou’s powers?

As the Demon King, Sadao Maou has immense magical powers. In his original world, he could manipulate fire and darkness and was known for his overwhelming strength and fighting skills. However, after being transported to Tokyo, his powers are severely weakened and he becomes an ordinary man.

What does Sadao Maou do in Tokyo?

In Tokyo, Sadao Maou adopts the alias “Sadao Maou” and finds employment at a fast food restaurant called MgRonald’s. He starts as a part-timer and gradually works his way up to assistant manager. Despite his demonic background, he takes his job seriously and excels at it.

Does Sadao Maou have any allies or friends?

Throughout the series, Sadao Maou forms various alliances and friendships. One of his closest allies is his former general Alciel, who is also transported to Tokyo and takes the name “Shiro Ashiya”. He also befriends Emi Yusa, a heroic knight from his original world who is also transported to Tokyo. In addition, he develops friendships with his co-workers at McRonald’s and other people he meets.

Will Sadao Maou ever return to his original world?

While Sadao Maou initially hopes to find a way back to his original world, he gradually becomes more attached to his life in Tokyo. Throughout the series, he faces various challenges and adversaries, but ultimately decides to stay in Tokyo and build a new life for himself. His focus shifts from reclaiming his throne to finding happiness and success in his current circumstances.