What is the name of the protagonist in Stephen King's Christine?

The protagonist in Stephen King’s Christine is Arnold “Arnie” Cunningham.

Arnie is a bullied, insecure high-school student who discovers a dilapidated 1958 Plymouth Fury for sale in Libertyville, Pennsylvania. He buys the car for $250 and names it Christine, despite warnings from his best friend Dennis Guilder. As Arnie restores the vehicle, his appearance and personality change dramatically: he becomes more confident and stylish, but also arrogant, isolated, and increasingly cruel.

Christine is not an ordinary car. She appears to possess a supernatural will connected to her former owner, Roland D. LeBay, and she can repair herself after being damaged. Her influence pulls Arnie away from Dennis and his new girlfriend, Leigh Cabot, while the car takes revenge on people who have harmed or threatened them.

Dennis is an important viewpoint character and helps fight Christine, which can make him seem like the protagonist. Leigh is also central to the plot, but Arnie’s transformation and relationship with the Plymouth Fury drive the novel. The book was published in 1983 and adapted into John Carpenter’s 1983 film.