- This is on the DuckTales (2017) version of the character; for the classic version, see Gladstone Gander.
Gladstone Gander is a character created by Carl Barks who made his debut in the Donald Duck comic Wintertime Wager in Walt Disney's Comics and Stories #88 (first published in January 1948). He is a lazy and extremely lucky goose who never fails to upset his first cousin and arch-nemesis, Donald Duck. He is voiced by Paul F. Tompkins.
Unlike Donald Duck or Scrooge who are hardworking and have ambitions, Gladstone is lazy and overdependent on his luck. He has no ambitions in life and is incapable of long-term planning. Gladstone is arrogant, believing that with his supernatural luck, he can get out of any situation and can breeze through life without having to get his hands dirty. However, Gladstone's luck is not infinite as it tends to get the best of him or get him into situations that he can't get out of without help from his family. He is also shown to be inconsiderate as despite everything Donald and Scrooge had done to save him, Gladstone didn't thank the two for saving his life and merely brushes it off as his own luck's doing that got them out. When his luck got him in a situation that meant sacrificing his family or his freedom, he did not hesitate to win the competition despite all that his family had gone through to rescue him, showing how self centered he is and how little he cares for others besides himself.
Fortunately, despite all of his faults, Gladstone has an existential soul-seeking side where he questions who Gladstone Gander really is and wanted to go on a journey to answer said questions. Unfortunately, that didn't last long as his fortune came back when a beautiful wealthy woman sold him her yacht for 20 bucks. This shows that despite all he had went through, as long as his luck continues to spoil him, Gladstone is somewhat irredeemable and cannot see the error of his ways.