Strange 'Hello Alex' AI Trend Is Taking Over TikTok Feeds

Hello Alex, It Is Me, Your Old Best Friend Luis is a catchphrase used in a series of AI-generated videos where hyper-realistic versions of popular characters read a letter addressed to a person named Alex written by their old best friend Luis. The original version of the meme was uploaded by TikToker @luis.verified in early January 2026 and went viral over the following months, becoming popularized in March 2026 as the subject of edits and further memes.