DuckTales (2017 TV series)
After not speaking to each other for ten years, Scrooge McDuck is reunited with his nephew Donald Duck after he asks Scrooge to babysit his three nephews Huey, Dewey, and Louie for the day. The presence of the newcomers rekindles Scrooge's sense of adventure, leading the group to go on many new treasure-hunting expeditions. The nephews and their new friend Webby seek the truth behind their uncles' strained relationship and the unexplained disappearance of Huey, Dewey, and Louie's mother and Donald's twin sister Della Duck.
Duck family (Disney)
In his second appearance in "Smarter Than The Toughies" (2004) by Lars Jensen and Daniel Branca, Whitewater is the nephew of Scrooge McDuck's cousin Douglas, making him Donald's second cousin.