Ex–MassMutual marketer by day, red-headbanded Wall Street warrior by night, Keith Gill was the poster boy for 2021’s Reddit uprising. He inspired a movement—an insurrection, really—that contributed to a January stock-buying frenzy in GameStop. After placing an initial $50,000 bet on the ailing video game retailer in June 2019, and continually doubling down thereafter, Gill posted hours-long videos to YouTube and comments on the Reddit forum r/WallStreetBets to advocate for the down-and-out company. His cheerleading helped motivate retail investors to stick it to short-selling hedge funds and the financial establishment at large by buying shares of GameStop and other downtrodden companies in the meme-stock mania. While he is celebrated online for his “diamond hands”—holding on to the stock despite earning tens of millions of dollars in on-paper profits—Gill is being sued by some angry investors for alleged stock-price manipulation. Gill, who goes by the online aliases “Roaring Kitty” and “DeepFuckingValue,” rejected the accusations in congressional testimony in February, saying “the idea that I used social media to promote GameStop stock to unwitting investors and influence the market is preposterous.” Gill has kept a low profile since then.