Tōbei Tachibana mentors and coaches the Kamen Riders in racing, residing alongside them at the Rider Carrier. He consistently offers guidance on diverse matters, though the Riders regularly overlook his advice. Physically, he stands as the sole human character matching the Riders' height, while other humans appear at a normal scale; this unique stature visually aligns him with his protégés. He also features as a non-playable ally character in the video game *Kamen Rider SD: Sortie!! Rider Machines*, upholding his supportive role within that medium.