Mojo Jojo is the main antagonist of The Powerpuff Girls, the Cartoon Network series created by Craig McCracken that premiered in 1998. Voiced by Roger L. Jackson, the character became known for long, repetitive speeches and dramatic declarations that contrasted with the show's fast action. As clips from the series circulated on meme pages and soundboards, his short exclamations were isolated as reaction sounds. This brief version survives because the voice is recognisable in under two seconds, making it easy to reuse in edits, chats and parody villain moments online.