Donald Duck and the Gorilla
Donald Duck and the Gorilla is a Donald Duck short adventure disaster and monster film which was originally released in 1944. It stars Donald Duck along with his three nephews; Huey, Dewey and Louie and Ajax, the killer gorilla. The 1930 Mickey Mouse cartoon "The Gorilla Mystery" has a similar plot involving a gorilla named Beppo who captures Minnie Mouse.
Beagle Boys
Scrooge first met the modern third generation Beagle Boys during Christmas 1947, which was when he first met his grandnephews Huey, Dewey and Louie and met his nephew Donald Duck for the second time. Since then the Beagle Boys have been a constant threat to Scrooge's Money Bin.
The third generation of the Beagle Boys, like their fathers, were never given any personal names by Carl Barks but was instead referred to by their prison numbers, which starts with "176-" and ends on a permutation of the numbers 1, 6 and 7, which allows six different combinations. This tradition was first established in Barks' "The Menehune Mystery" (Uncle Scrooge #4, December 1953), while the Beagle Boys in previous stories, and some of them in "The Menehune Mystery," instead had their prison numbers as "176-" followed by random digits (except in their first story, where they have no prison numbers). However, in a few of his later stories Barks didn't continue this tradition and used random numbers again instead, but subsequent writers and artists by default still mostly uses the 1, 6 and 7 combinations for the Beagle Boys in the modern comic books. The Beagle Boys also have their prison numbers tattooed on their chests. According to Don Rosa's "The Beagle Boys vs. The Money Bin" (2001), the Beagle Boys have been known by their prison numbers since their childhood, and they don't even know their real names themselves. Their parents do know their real names, but demand a bribe from their sons to let them know. Also according to that story, Blackheart Beagle doesn't remember his sons' names.