AJ Gentile is an American creator, writer, and voice actor best known for founding and hosting The Why Files, a YouTube channel exploring mysteries, legends, conspiracies, and UFOs. Born March 5, 1972, in New York City, Gentile began his career in entertainment through writing and producing shows like The Naughty Show (2011) and Stoned Science (2018), and doing voice-over work, including roles in The Legend of Korra. Gentile co-founded a cannabis delivery venture, SpeedWeed, with his brother and wife in 2011. Gentile is also a member of MENSA.

These layers of background inform both the style and content of his public work.

In The Why Files, Gentile seeks to walk a line between curiosity about the unexplained and critical thinking. Each episode typically splits into two parts: the first presents the lore or mainstream version of a mystery, legend, or conspiracy; the second examines what is credible, what is false, and what remains uncertain. (He has acknowledged that he doesn't always “get things right.”) Gentile co-hosts with “Hecklefish,” a goldfish who serves as a humorous interlocutor—often voicing believer-like questions which Gentile then addresses with logic and research.

Gentile matters in the contemporary disclosure and UFO community because he offers content that many feel balances entertainment with a skeptical lens. Viewers looking for UFO or myth content that isn’t purely sensational or conspiratorial often point to The Why Files as a space where curiosity and rigor coexist. Gentile’s work—widely watched—also amplifies lesser-known experiences (alien encounters, abductions, folklore) by giving them narrative form, while applying methodical scrutiny in service of separating evidence from speculation.

A newer addition to his work is The Why Files Basement, a show where Gentile interviews people central to the stories he covers. According to Gentile, guests are those who have first-hand experience or big roles in the lore, which allows deeper dives into both belief and contradictions. This format shifts the focus from solo narrative to conversational exploration, sometimes sparking debate from the audience about how much pushback guests receive.

People familiar with Gentile describe him as someone who is earnest about curiosity, adept at storytelling, and committed to doing research. Some of his most popular content has looked at major UFO events, ancient mysteries, or alleged government programs. Across episodes, he tends to emphasize what is known, what is unknown, and what remains contested—recognizing both the allure and limits of the unexplained.