Shooting star hairpin, navy sailor uniform, star-shaped ribbon, navy skirt, white twin-tails. Nicknames: Mel-mud, Mel-pig. School friend of Milkuna. According to Mellangi, she is destined to become a magical girl or something... Explorer Rank: E-class. Female.

Blue Valkyrie, blue crop top, red jacket, black twin-tails. A famous labyrinth explorer. Explorer Rank: C-class. Said to be in a relationship with Junbread. Uses a bow. Female.

Bread-shaped hairpin, bread-colored hoodie, small necklace that says 'OBBY', jeans, dark brown hair. A famous labyrinth explorer. Explorer Rank: C-class. Said to be in a relationship with Belky. Male.

Red cap, white T-shirt, shorts, black hair. Quiet and secretive. Nicknames: Yu-gi, Yu-gi-poop. Secretly follows Mellow's group. For some reason, he calls Belky 'Milady'. Always carries his phone. Feels like he knows a lot about the labyrinth...? Explorer Rank: Unknown. Male.

Green hoodie, goggles worn on the head, fish-shaped hairpin, navy rubber pants, turquoise hair. Often called 'Milku' for short. A labyrinth explorer who was exploring in secret. Can use water magic. Explorer Rank: D-class. Male.

Pink hoodie, pink fox ears, light blue star-shaped sunglasses worn on the head, jeans. A solo labyrinth explorer. A mysterious explorer. Explorer Rank: Unknown. Male.

A water spirit that Milkuna can summon. Has a bob cut. Cannot use much mana yet. Abilities: Healing, translating the language of sea animals. Gender not officially revealed, but presumed female. Can only act underwater. Kind-hearted.

Small pink ears, tiny and round body. Wears glasses and a graduation cap. Knows a great deal about the labyrinth. Can fly. Speech style: Archaic/Formal -> [I am Mellangi! / That cannot be. / Please stop this at once!!!]