FABLE, an experimental meme coin on Robinhood Chain linked to AI agent Claude Fable 5, surged more than 990-fold in 24 hours and briefly exceeded $10 million in market capitalization. Its market cap then fell more than 90% in two minutes after AI artist and designer Kevin Ngo said his social media account had been hacked and that he did not endorse any token. The token briefly reached $452,400, rebounded above $2 million in about 10 minutes, and later fell to about $560,000 after Ngo repeated his denial. Earlier reports cited market caps of $8.5 million, $3.18 million, $1.54 million and more than $1.35 million at different points, while 24-hour trading volume reached $11.7 million. The episode highlights the extreme volatility and credibility risks of meme coins.