Anaheim Ducks — Dropping "Mighty" (2006)

The Anaheim Ducks’ 2006 rebrand stands as one of hockey’s worst moves, replacing the beloved 'Mighty Ducks' name and iconic jade-and-eggplant scheme with a generic black-and-gold identity. This change, triggered by Disney’s sale to the Samuelis, wiped out the team’s whimsical charm for a forgettable look that cost $2 million to implement yet failed to boost attendance beyond the previous season’s 16,500 average.