"A Case of Mistaken Secret Identity" is the eighty-fifth episode of DuckTales.
Scrooge's nephews are trying to figure out just who Gizmoduck's secret identity is. So far, their predictions all point to Launchpad McQuack.
Huey, Dewey, and Louie shouldn't think that Launchpad is Gizmoduck because they saw both of them together at the end of "Super DuckTales".
When aired on Toon Disney, the shot of the worker's cigar falling into the crate of fireworks was cut; as a result, the fireworks now seem to ignite entirely on their own, which makes no sense. Toon Disney also cut the shot of Big Time hitting Burger on the head.
Launchpad would be mistaken as the secret identity for a superhero again in the Darkwing Duck episode "A Duck By Any Other Name".