Jeffy Yu, co-founder of the AI-driven crypto project Zerebro, faked his own death in a livestream on May 4, 2025, to promote the memecoin $LLJEFFY. The video, which appeared to show Yu committing suicide, led to an outpouring of grief and a surge in the token's value, reaching a market capitalization of over $100 million. However, on-chain data revealed that wallets linked to Yu moved approximately $1.4 million in crypto post-"death," raising suspicions. Yu was later found alive at his parents' home in San Francisco. He claimed the stunt was a response to harassment and doxxing, but critics view it as a calculated exit scam. The incident has sparked debates about ethics and accountability in the crypto space.