Taiga Yagura is a primary driver for the Mobile Rescue Police, piloting the firetruck-themed Drive Head 02 Rescue Backdraft for firefighting and rescue. This machine undergoes significant upgrades: first to Drive Head 02 Mk-II Brave Backdraft in episode 23 for enhanced heat resistance after a critical volcanic rescue where he was trapped, and later to Drive Head 02 Mk-III Master Backdraft in the web series, gaining increased power, speed, and a dedicated flight unit.

Initially quiet and distant, especially towards Gou Kurumada, Taiga gradually forms strong bonds with fellow drivers through shared rescue missions. Despite his everyday reserve, he exhibits intense passion and hot-blooded determination during emergencies. He attends Takatomi Elementary School as a popular fifth grader due to his athletic talents, though he maintains emotional reserve about friendships. Commander Takahito Saionji serves as his uncle and primary caretaker, with no mention of his biological parents.

Taiga overcomes personal fears, notably an aversion to ghosts highlighted during an island investigation. He displays unique traits like preferring unconventional ice cream flavors such as omelette and beef stroganoff. His combat and rescue capabilities expand through Synchro Fusion techniques, particularly the powerful "Brave Backdraft Rescue Commander" fusion with Transporter Gaia, which carries a strict three-minute operational limit before shutdown. A pivotal moment occurs in the web series when he deliberately intercepts a missile meant for White Crystal Hope, destroying his Brave Backdraft unit to protect teammates. His relationship with Gou evolves from initial rivalry into mutual respect, especially after Gou rescues him during an early mission.