Dumb Donald is a member of the Junkyard Gang. In the Junkyard Band, he plays the trombone (made from a long, bent pipe and a Victrola horn machine).
Dumb Donald, as his name would suggest, is very simple-minded and loud, but means well and tries his best to help the gang and be nice. Contrary to his name, he often has outbursts of intelligence, he is also very intolerant of Asians and Latinos, though the reason for this is never known.
Dumb Donald is an African-American teenager.
He wears a pink knit-cap which covers his face (aside from his eyes and mouth), a green long-sleeved jersey with 2 blue stripes on each sleeve (which is three sizes too big), blue pants, green socks and blue sneakers. This is his appearance from season 1-3.
The only difference in The Final Season is that his hat is a bit darker.
- In Sagas 1-2 Dumb Donald's full face was never seen. In The Final Season, however, Dumb Donald took off his hat, revealing his face. In Saga 3, his face was only his floating eyeballs and mouth,.
- In an issue of the Gold Key Fat Albert comic, a flashback sequence had someone yank the hat of Donald and tossed out a window, revealing only the back of his head, and that he had average closely African-American style hair, though this is believed that this was a flashback to Pre season 1
- he has a baby sister in season 2
- His appearances in the Stephen Squirrelsky and Friends' Movie Spoof Travels are AiAi The Monkey and A Day for George, The Reindeer and the Deer, Animal Story 2, AiAi the Monkey's Grand Adventure: The Search for Tails, A Cartoon Character's Life, and Nikki's Adventures of Sing Along Songs Episode 7, Here Comes Winnie the Pooh, Animals, Inc, Simba 2, Miss Bianca and the Bernard 2: Fievel's Adventure, FernGully: The Last Rainforest, A Pooh in Central Park, Bubblesrella 2: Dreams Come True, The Brave Little Piglet, Kung Fu Owen, Nikki's Adventures of Sing Along Songs Episode 8, The Thomas O'Malley Movie, Kermit Returns, Fievel the Red Nosed Mouse and The Island of Misfits, Nikki's Adventures of Sing Along Songs Episode 9, Cloudy with a Chance of Meatballs, Finding Alvin, Animated Tale, The Forest Book 2, Nikki's Adventures of Sing Along Songs Episode 10, Madagascar, and Sleeping Beauty and will even be in more movie spoof travels.