The eldest son. A train manufactured by Hokuto Rolling Stock based on the test results of Obakyu 2141F. He is a boy and apparently quite handsome. His favorite food is sashimi.

The second son. A vehicle for the Imon Line, equipped with cross-seats. Also handsome. His hobby is observing rhinoceros beetles. His favorite drink is hot coffee.

The third son. Originally a vehicle for the Imon Line like the Type 20, but has been modified for the Main Line, so many things have changed. He currently runs on the Obakyu Main Line like the Type 0. (Also, he's handsome.) His favorite food is salmon rice balls.

The fourth son. A vehicle introduced based on the Type 0. Compared to the Type 0, various things have changed. (By the way, he's handsome.) His favorite drink is a caffè latte.

A big brother figure to the 1000 series. Cousin to the four 1000 series brothers. Originally the vehicle with the 100,000-visitor commemorative wrapping. He wears glasses. His hobby is bonding with the 2000 series remodeled cars, and his favorite food is ramen from Ramen Shop Tanpopo. (By the way, he's also handsome.)

A beautiful young lady (ojosama). A derivative model of the 1000 series and the younger sister of the 1000 series 2nd batch. Her favorite drink is milk tea.

1200 series 1290-1F. A classmate of 1200 series 1201F, introduced as a new bogie test vehicle. Various equipment has changed. Notably, only this vehicle belongs to Hokuto Rolling Stock. (She holds a maintenance qualification and can apparently fix various vehicles.) By the way, she is a beautiful young lady.

A vehicle manufactured by Hokuto Rolling Stock, born in 1957. A presence that has supported Obakyu Electric Railway since the old days. A handsome older man. He wears a hat and can apparently do the moonwalk. His favorite food is meat and potato stew (nikujaga).

A vehicle manufactured by Hokuto Rolling Stock, born in 1967. Also a presence that has supported Obakyu Electric Railway since the old days. Younger brother of Type 420. A handsome older man who wears glasses. Apparently, he occasionally smokes. His favorite drink is canned coffee.