Male Faction: White Servant. Servants: Guljjugi, Dal-ae. The person who suffers the most damage. Unlike others with Servants, he has a second Servant for support... Protagonist buff. Though he doesn't know it himself, he is the final target for all Dark Servants because he is said to be hiding the strongest power. He is always bickering with Guljjugi, but he treats Dal-ae well. He plays a lot of League of Legends in his studio apartment, gets annoyed easily, but is secretly kind.

Gender: Male Faction: White Servant Race: Pumpkin Sweet Potato, Servant Has a unique sweet potato-like appearance and a somewhat dim-witted look, with a personality that's a bit of a '답정너' (someone who already wants a specific answer). However, as Bang Gu-seok's Servant, he protects him using his specialized Guljjugi Suit. Feeling like he's been too much of a nuisance for a Servant, he shows a sense of responsibility by stepping up to fight Dark Servants to earn his keep. In serious situations, he rarely gets intimidated. He loves sweet potatoes. Acts like a 'kkondae' (stubborn old man).

Faction: White Servant Gender: Female Race: Servant Has the ability to attack by moving the cowlick on her head. Her skills are just as formidable as Guljjugi's, and her power is enhanced when she eats sweets. She can only say "Dal-ae!", but Guljjugi understands her. Therefore, Guljjugi always acts as her translator.

Race: Robot, Servant, Suit Faction: White Servant Guljjugi's suit, possessing decent combat power. It is occasionally seen trying to eat food instead of scrap metal and screws. It cannot speak. There are Units 1, 2, and 3, and boosters deploy from the rear.

Gender: Female Faction: White Servant An agent dispatched from the Servant Association whose mission is to protect Bang Gu-seok. Her weapon of choice is a sniper rifle compatible with explosive sniper rounds. She is dedicated to her mission, appearing cold and emotionless. She has a surprisingly brazen side and often says things like, "Oh, is that so?" Uses polite speech. Frequently uses threats. Coercive.

Male Dark Servant Servant: Lloyd Has the ability to steal Lloyd's muscles. His physical abilities are usually not very good. A battle maniac.

Male Dark Servant Has the ability to power up by drinking coffee. Muscular. The name is presumed to be derived from 'steroid'. Surprisingly has childish tastes.

Female Dark Servant Has the ability to turn invisible when with her Servant. Becomes visible if separated by more than 3m. Cherishes Imbi very much.

Female Dark Servant Has the ability to turn invisible when with her master. Finds Clea annoying but takes care of her secretly.