Game Master

Game Master is the main antagonist of the series Maou-sama, Retry!.

Appearance
Face or shape has not yet been revealed because he communicates through monitors or through the Administrator Rights.

Personality
He looks childish, and likes to play, it is implied that he was responsible for dragging Akira Oono's soul along with Hakuto Kunai. He is also responsible for blocking the administrator's resources and creating the rules that allow them to be unlocked.

Kunai noted that unlike Throne who wanted the destruction of the world, the Game Master seems more interested in playing a fun game.

Plot
Game Master has been watching Kunai since the moment he arrived in the new world, he has prepared baits to lure Kunai to the top floor of the dungeon in Edogawa to introduce himself to Kunai. Later when Mary breaks free from the Demon Lord’s ring, he sends provocative messages to Kunai.

Abilities
It controls the world system, and is responsible for the administration of dungeons, it also has the power to establish rules for the function of certain technologies such as steamships that only function if powered by excavated Coal, not working with any other fuel such as charcoal.

Trivia

 * Mary appears to know her true identity, but has not revealed it to Akira.
 * While it's not impossible, Game Master may be a disgruntled old acquaintance who has trapped the creator of Infinity Game inside virtual reality to get revenge on him.
 * The Game Master name is not official, when an official name is revealed it will be changed.