Louie Duck is one of the classic Disney characters appearing in the 'Disney Tsum Tsum' series. He is one of the triplet nephews of Donald Duck, alongside his brothers Huey and Dewey. Known for his green attire, Louie is the clever and slightly mischievous one among the trio. In 'Disney Tsum Tsum,' Louie often plays the role of a supporting character, helping his uncles and friends solve problems with his wit and ingenuity. His character adds humor and charm to the series, making him a beloved figure among fans.