John Barosa

Mr. Barrister John Warosa, or simply John Warosa, is a fictional character, created by an unnamed 419 advanced fee scammer, and later co-opted by YouTuber Atomic Shrimp, and has become infamous in the scambaiting community. His backstory varies, but he is usually portrayed as a barrister, or a hypothetical second scammer, attempting to interrupt an ongoing scam. He was immortalised in song by Eric Castiglia's song "The Soul Called Mr. Barrister John Warosa."

Notably, the spelling of his last name is inconsistent, due to an error on the part of the scammer than originally conceived him, and is spelled both "Barosa" and "Warosa", with the Barosa spelling normally appearing in video titles, and the Warosa spelling appearing in the video itself.