No widely documented source has been attached to this short I'm Leader clip, so it circulates mainly as a standalone reaction sound rather than as a quote tied to one show, film, or game. That vagueness is part of its appeal: creators can drop it into almost any context where leadership, confidence, or a sudden power grab is the joke. Its under-two-second length also helps it travel well in short-form edits, where a fast, recognisable declaration works better than a longer speech.