Johnny Truant is a fictional character from the novel House of Leaves by Mark Z. Danielewski. He serves as the primary narrator, providing a unique perspective on the story's complex structure. Truant is a young man who discovers a manuscript about a mysterious house that is larger on the inside than it is on the outside. Throughout the novel, Truant's life becomes increasingly chaotic as he delves deeper into the manuscript. His narrative is interspersed with footnotes and commentary, reflecting his troubled mental state. This unconventional storytelling style contributes to the book's exploration of themes like reality, perception, and the nature of storytelling itself.