The phrase denotes attire replicating the appearance of the Darkwing Duck character, intended for wear during Halloween festivities. This commonly involves a purple hat, mask, cape, and jumpsuit, all characteristic of the animated Disney superhero.
Such ensembles capitalize on the nostalgia associated with the popular cartoon series, providing an identifiable and often humorous option for celebratory dress. The appeal lies in its recognition across generations, combining childhood memories with the spirit of the holiday. The availability of official and fan-made versions contributes to its prevalence.