how is he related to mickey and donald?
He  is a close friend of Mickey Mouse and Donald Duck.
Goofy
Goofy is a close friend of Mickey Mouse and Donald Duck.
who sings stand out from a goofy movie Tevin Campbell who produced the movie? Disney MovieToons and Walt Disney Television Animation who has voiced in it? Jason Marsden, Bill Farmer, Jim Cummings, Kellie Martin, Pauly Shore, Jenna von Oÿ, and Wallace Shawn. who are the main characters? Goofy,  Max,  Roxanne can you describe the appearance of the first character in a few words? Goofy is a tall, anthropomorphic dog who typically wears a turtle neck and vest, with pants, shoes, white gloves, and a tall hat originally designed as a rumpled fedora
wiki:13386738
Goofy [SEP] Introduction
Goofy is a funny animal cartoon character created in 1932 at Walt Disney Productions. Goofy is a tall, anthropomorphic dog who typically wears a turtle neck and vest, with pants, shoes, white gloves, and a tall hat originally designed as a rumpled fedora. Goofy is a close friend of Mickey Mouse and Donald Duck. He is normally characterized as hopelessly clumsy and dim-witted, yet this interpretation is not always definitive; occasionally Goofy is shown as intuitive and clever, albeit in his own unique, eccentric way. Goofy debuted in animated cartoons, starting in 1932 with "Mickey's Revue" as Dippy Dawg, who is older than Goofy would come to be.