The Braves High-A team in Rome has been renamed the Emperors and will have an Emperor Penguin as its mascot, which prompted one of the players to waddle on the bag after reaching base:
https://www.mlb.com/news/minor-league-player-does-penguin-waddle-celebration?t=mlb-pipeline-coverage
https://www.mlb.com/news/minor-league-player-does-penguin-waddle-celebration?t=mlb-pipeline-coverage