Heapindaburu

Mao Ichimichi

Azumi Shibukawa / Hairpin Red (voice)

Hisako Kanemoto

Kyouko Usui / Hairpin Blue (voice)

Hua Jing Mei Chun

Fumio Chitose / Hairpin Yellow (voice)

Shiori Izawa

Eri Yokosuka / Hairpin Green (voice)

Reina Kondo

Hina Kawai / Hairpin Pink (voice)

Ryō Horikawa

Ken Horibe / Race Control (voice)

Xiao Yue Yong Hui

Kensuke Hayami / Racing Driver (voice)