Boost is the leader of the Delinquent Road Hazards, an antagonistic gang of street racers with a collective affinity for body modification. According to his Car Finder Game biography, Boost once worked in a garage for the elderly, where he befriended a drop-tank racer who turned him onto the unorthodox practice of racing with nitrous. His newfound interests led him outside his hometown of Nitropolis, where he eventually met DJ, Snot Rod, and Wingo, with whom he formed a gang. The four cars are known for their obnoxious lifestyle, and have a recurring habit for bringing trouble wherever they go, especially for Lightning McQueen and his friends. He does so by speeding and reckless driving which he likes to do. He has a love for rap music much like the other Delinquent Road Hazards.
Boost is recognizable for his standout appearance, sporting a sleek, black spoiler and an elaborate network of exhaust pipes, as well as, most notably, the three nitrous boost canisters fastened above his roof. He is a Kyoku Jitsu, which, in real life, is based on the 1999 Nissan Silvia S15.