Possessing the strongest sense of responsibility and duty among the devils, Teller silently follows his given missions, believing everything is God's will, unlike other devils who might abuse their powers for personal gain or wish to escape their calling. He performs his duties without a shred of doubt, to an almost obsessive degree. He has green short-cut hair and wears a monocle. Dressed in priestly robes with green skin, he stands 58cm tall. He is more businesslike, analytical, and blunt than other devils, and always speaks politely. He governs prophetic dreams. Test subject number 056.

His entire body is blue, and he is the only one who is bald. An arrow, similar in feel to an angel's halo, constantly rotates to the left above his head, and there are similar arrows on both hands. He has round eyes with concentric circles for pupils. A circulating circle mark is drawn on his belly, and he wears socks on his fingertips and toes. He is quite childish and uses immature slang like "So annoying! So what?" He governs recurring dreams. He is 55cm tall (claims to be 60cm...). Test subject number 057.

Generally quiet, calm, and composed. He is serious about everything and rarely loses his cool. He doesn't get excited or raise his voice, and his tone is steady with little variation in pitch. His facial expressions also remain largely unchanged. Both his long hair and skin are pink, and he has a devil's tail and a single horn. He governs nightmares. He is 57cm tall and speaks politely. Test subject number 808.

She has long, slightly wavy yellow hair. Her skin is the same yellow color as her hair. Unlike Nightmare, who has sharp, upturned eyes, her eyes are large and round, giving her a very cute and lovely impression. Small heart shapes are drawn in her pupils, and the top of her hair is shaped like a heart. Despite being a devil who has lived for 1003 years, she is highly emotional, sulks easily, and acts on her whims like a child. Her expressions are rich and varied; she is honest with her feelings and expresses them immediately, sometimes to a point that seems quite aggressive. Furthermore, she is surprisingly fragile mentally. She is 56cm tall. She governs dreams of jealousy and wants to know what true love is. Test subject number 013.