Donnie is a fictional character from the film Donnie Darko, released in 2001. He is portrayed as a troubled teenager who experiences strange visions and time travel. The story explores themes of mental health, existentialism, and the impact of choices. Set in the 1980s, Donnie's life is complicated by his interactions with family, friends, and a mysterious figure in a rabbit costume named Frank. The film combines elements of science fiction and psychological thriller, making it a cult classic that has garnered a dedicated fanbase over the years.