Seiba, Retsu

星馬烈

Retsu is one of the two title characters. He is an 11-year-old fifth-grade student and Go's older brother. Although he controls his patience better than his brother, he still occasionally vents his annoyance at someone. Retsu wears a green hat as his trademark. His primary color is red, which matches his hair, eyes, gloves, shirt, and Mini 4WD cars. Together with Go, they are known as the "Let's Go Brothers" (レッツゴー兄弟 Rettsu Gō Kyoudai). In WGP, he serves as the captain of the TRF Victorys.
Cars: Sonic Saber (ソニックセイバー Sonikku Seibā), Vanguard Sonic (バンガードソニック Bangādo Sonikku), Hurricane Sonic (ハリケーンソニック Harikēn Sonikku), Buster Sonic (バスターソニック Basutā Sonikku), and Blitzer Sonic (ブリッツァーソニック Burittsā Sonikku).