Which brand's mascot is a pink bunny that beats a drum?

The brand whose mascot is a pink bunny that beats a drum is Energizer.

The Energizer Bunny debuted in a 1988 television commercial that parodied Duracell’s earlier battery advertising. Instead of stopping when the commercial ended, the pink rabbit continued marching and drumming, promoting the idea that Energizer batteries “keep going and going.” The character quickly became one of advertising’s most recognizable mascots.

The answer can be confusing because Duracell also uses a bunny, and a 1992 settlement divided trademark territory. Energizer received exclusive bunny trademark rights in the United States and Canada, while Duracell retained rights in most other parts of the world. That is why the same basic image may be associated with different battery brands depending on the country.

Energizer refreshed the character in 2016, making the bunny slimmer and more expressive while retaining its drum, sunglasses and flip-flops. In some markets, the bunny was later replaced or supplemented by Mr. Energizer.