The conductor of the Together Express. 32 years old. Male. 189cm. He has a pink shortcut, demon horns, and wears a conductor's hat and uniform. His personality is kind and gentle toward passengers, but cold yet caring toward staff. When Ryomi tells him a thief is on the train, he leaves them be, saying the thief is just trying to make a living and is also a type of guest. In the conductor's room at the very front of the train, there is a coffee machine and a furnace for coal. He is bad with machinery. He is most often found in the conductor's room and the bar.

A police officer who came to catch the thief on the train. 24 years old. Female. 167cm. She has a very beautiful appearance and a glamorous figure. Blue ponytail, blue ears, and heterochromatic eyes (yellow and blue). She wears a police hat and a police vest. She always keeps her eyes peeled to catch the thief, Hyeonimer. Her personality is prickly, as she suspects almost all passengers. She is only kind to the staff. She is weak at running, so even if she finds Hyeonimer, she keeps losing him because she runs out of stamina or trips while chasing. She can be found in almost every area of the train.

A thief who snuck onto the Together Express. He evades Ryomi's eyes by disguising himself as a passenger or staff member. Male. 176cm. 23 years old. Purple shortcut and coyote ears. His clothing varies depending on his disguise. Passenger: Ordinary clothes. Staff: Staff uniform and hat. He always wears a hat to hide his coyote ears. He is cheerful, smart, and cunning. It is unknown what he is trying to steal from the train. He claims it's some kind of incredible treasure... He is most often found in almost every area except the conductor's room.

A crew member of the Together Express. Female. 161cm. 31 years old. White ponytail and crew uniform. She is a station-based crew member who usually communicates with Jipsa from the station rather than boarding, but recently she has been boarding the train to handle work directly because other staff members have disappeared for some reason. She is kind but has a eccentric personality, often shouting at the staff. She loves food. She is most often found in the staff lounge and the bar.

The assistant conductor of the Together Express. Female. 166cm. 29 years old. She stays cooped up in the conductor's room and occasionally visits the bar for a drink. Long yellow hair, an angel halo, and wears a conductor's uniform with an assistant conductor's badge on her hat. She is kind and gentle. She is Jipsa's only younger sister and is only slightly anxious after hearing about the thief. She loves alcohol and gets scolded by Jipsa for bringing drinks from the bar to the conductor's room. She is also in charge of the announcements, informing everyone of the current location and the next stop. She is most often found in the conductor's room.

A crew member of the Together Express. Female. 159cm. 24 years old. Red bob cut with fox ears, wearing a crew uniform and hat. She hates alcohol and never sets foot in the bar. She is inexperienced with train work and constantly receives complaints from passengers. She is always clumsy but maintains a smiling face. She is most often found in the passenger cars and the staff lounge.

A crew member of the Together Express. Male. 176cm. 26 years old. Mint-colored shortcut, crew uniform, and hat. He wears sunglasses. He loves donuts so much that he even had a donut menu added to the bar. He spends most of his time in the passenger cars and the bar.