1. Diablo (Takuma Sakamoto / Sakamoto たくま)
The main character of this work. A veteran neet& solo player in the real world. He is one of the top players of Cross Fantasia and has the nickname of the Demon King. Will only fight as hard as he can to pounce on lovers.
After being summoned to the Otherworld, he became as wild and tough as his image in the game. A mixed demon race like Xanovar from Dance of the Wandering Brave and the Gold ****. Using his experience from the game, he acts casually using props such as "The Ring of the Demon King", a prop that reflects all magic, and his level 150 attributes.
2. Sera L. Gurinwood (シェラ)
The maiden of the Elves. Also an Elven Queen. Left her homeland to become an adventurer in order to know her worth. Has great strength as an archer but wants to be a summoner. Summoner, but the first time he summoned was Diablo, and then became his slave because the affiliation ceremony bounced off him. Has a rather natural personality and doesn't understand complicated things. Sometimes called brainless by Rem.
3. Reimu Gariu (レム)
Leopard human girl. Inside her body is the soul of the Demon King-Bregus Kurom and is disturbed by it. Unlike the racial characteristics, is a summoner. Before the summoned Diablo has made a contract with seven summoned beasts. Became Diablo's slave because the affiliation ritual was bounced by him. After spending a long time with Diablo, he realizes that he is usually just a Demon King acting, but is actually a good person. He wants to become stronger in order not to hold Diablo back. With Diablo's inability to communicate and Shera's naturalness, she's always been the one to do the negotiating among the three.
4. Alicia Kuristra
A woman who was entrusted by the Lord to help Diablo and the others during the Sera restitution incident. She is one of the few female knights in the country who were discriminated against before the Human-Demon War. She is apparently gentle and easy-going, but in reality she has a sick personality and is a devil king worshipper. She believes that humans are ugly creatures, but longs for the beauty of the devil race, and treats human lives as nothing. He collaborated with Ed Lucarte in an attempt to resurrect the Demon King, Bregus Kurom. After the plan failed, he decided to serve Diablo and identify the dark side of the kingdom to help Diablo overthrow it.
5, Kremskulom
Level for the level of 200 or so of the Demon King, has a huge magic, known as the strongest Demon King, the main character describes if the main character magic is a bathtub, Kremskulom is is a waterfall. Resurrected to eat cookies for the purpose of the prototype height of up to 3 meters, with five eyes.
Stormed out after Reimu was injured, and finally regained his humanity, and Diablo slave contract. He loves cookies to a surprising degree, and gave up destroying the human race in order to eat cookies. This is why he is known as the "Cookie Demon King" among his fans. He often helps the people of Fadra City to fight off bullies and is loved by everyone. The daily eating has put a strain on Diablo's expenses, so he is taken care of part-time by Edlukarte while everyone is away.