Role in the series
Gustav Goose made his first appearance in the series in the episode "Ducks by Nature".
Gustav Goose reappears in the episode "Ducky Dearest", when Huey, Dewey, and Louie are talking with him on the telephone. He plays in the bell for Donald Duck opening the door for him, when Gustav Goose opens the door Donald begins to curse him. Gustav Goose is shown for the last time when he is sleeping at home.
- It is unknown whether Gustav was intended to be the same character as Cousin Gus, despite the notable similarities to the character in name and appearance. Some confusion may arise from the fact that Gladstone Gander's German name is "Gustav Gans" ("Gustav Goose").
- He is one of the few anthropomorphic animal characters to be created specifically for Quack Pack.