Copete Duck FretF (also known as Fethry Duck) made his debut on August 2, 1964. Fethry Duck is the slightly confused and not too bright cousin of Donald Duck. Usually he is working as a reporter (quite successfully) along with Donald for Scrooge McDuck, but mostly he is annoying people by his peculiar way of seeing the World and doing things.
The story behind Fethry is a little messy. Originally he was created by the Disney studio by Dick Kinney (writer) and Al Hubbard (artist) for the European market. This makes him an American invention but his first appearance was in the Italian Topolino #453 from 1964. His first appearance in USA was not until 1966 in Walt Disney's Comics and Stories #304. To this day Fethry is not really accepted into the American stories, whereas he is a fairly popular character in Europe and Brazil.
In the Brazilian comics Fethry was given a secret identity named Morcego Vermelho (The Red Bat), created by Carlos Edgar Herrero (artist) and possibly Ivan Saidenberg (writer). Fethry's stint as Morcego Vermelho ran in Almanaque Disney, Edição Extra and a few other Disney series from 1973 thru 1990. The Morcego Vermelho stories remained a Brazilian phenomenon, but a few stories have made it to Europe, mostly Italy.
The Brazilian comics also provided Fethry with a nephew, Bequinho, and a girlfriend, Gloria, who is also his partner in crime fighting known as Borboleta Purpurea (Purple Butterfly).
Despite having been around for so long and having achieved the popularity that he has, the only reference to any transfer to other media to be found so far, are a few small figurines.