The exact origin of the 'Who's that Cubito?' clip is not documented, and it appears to come from user-generated soundboard culture rather than a known show or film. Its format riffs on the familiar cartoon reveal question, which is why it slots so naturally into meme edits. With only a handful of plays on record, it is still a niche pick, but its short length and punchy delivery make it a handy drop for creators who want a quick, funny introduction sting without any setup.