Gus Goose

Gus Goose (full name given as Gustave Goose on the theatrical release poster of the cartoon short 'Donald's Cousin Gus') is a lazy, and often hungry goose, who is Donald Duck's cousin, and the grandnephew of Grandma Duck.

Donald's Cousin Gus
Gus Goose first appeared in this 1939 short, where he visits his cousin Donald Duck.

Comics
In the Disney comics, Gus Goose was usually seen living on Grandma Duck's farm outside of Duckburg, where he works as her farmhand. In most adaptations, he is seen speaking properly rather than his usual honks from his animated appearances. He has also been seen dating Clara Cluck on a few occasions.

Mickey's Christmas Carol
Gus makes a non-speaking cameo appearance at Fezziwig's Christmas party.

DuckTales
A character who looks like Gus is seen in the episodes "Magica's Shadow War", "Duckworth's Revolt" and "Sweet Duck of Youth". Even though he's never named, it could be Gus Goose and not juste a lookalike character because in "Sweet Duck of Youth", he is seen with other friends and relatives of Scrooge McDuck at his birthday party.

Mickey Mouse Works
Although he never appeared on the show, his name was mentioned on a punch card in "Donald's Rocket Ruckus".

House of Mouse
Gus reappeared in animation in House of Mouse as the club's gluttonous chef who again only speaks in honking vocal sounds rather than saying actual words.

Minnie's Bow-Toons
Gus also reappeared in animation in Minnie's Bow-Toons, but unlike his previous television incarnations, he doesn't speak any lines.