Molech stands among Pandemonium's oldest and most prominent demons, his status nearly equivalent to Beelzebub and Azazel due to his ancient origins. He exhibits an intensely energetic and uninhibited personality, frequently expressing himself through a loud voice and unrestrained demeanor, with a free-spirited nature shaping his interactions and daily activities.

Physically, Molech has blonde hair—though some sources describe it as brown—and wears glasses. Despite clothing typically concealing his form, he possesses a notably muscular physique rivaling Azazel's strength, creating a distinctive presence when paired with his exuberant personality.

His most significant bond is with Dantalion, Pandemonium's librarian, whom Molech considers his best friend. He prioritizes this relationship above all else, routinely delegating official responsibilities to subordinates to assist Dantalion in the library. Molech willingly serves as a living stepladder for retrieving high-shelf books and follows Dantalion's directives despite his own greater age and seniority. He refers to Dantalion as "Senpai," readily accepting guidance and instructions.

Professionally, Molech holds an important position in Pandemonium's hierarchy but largely entrusts duties to assistants. This enables him to dedicate efforts toward supporting Dantalion's work and interests. As one of the ancient demons, he ranks among the highest authorities, yet his focus remains firmly on personal connections over administrative power.