Goofy Goober is a large, light tan peanut character with light green arms and legs. He wears a Southern hat, a red bow tie with yellow dots, and Mickey Mouse or Cream the Rabbit-like gloves. He also holds a lollipop. He has a single tooth, two large dimples on his cheeks, and a nose resembling Pinocchio's.
In "The Goofy Newbie" it is revealed that the Goofy Goober is really a security fish dressed up as a peanut. He is a large light purple muscular fish with yellow hair and dark purple lips. He has three freckles on the right side under his mouth. He wears a purple suit with a white dress shirt and a red necktie along with black shoes and green shades.
After being mentioned and referenced in many episodes throughout the series, he finally made his first physical appearance in the show as a cameo. He is shown as a waiter at the Goofy Goober's Ice Cream Party Boat in this episode.
He appears in the begining of the episode handing baloons to the children at Goofy Goober's Ice Cream Party Boat. Squidina then calls him to kick Patrick out since he keeps trying samples instead of actually buying ice cream. The Goofy Goober takes his disguise off revealing his true form as a security guard and uses a ice cream scooper to scoop Patrick out of the ice cream parlor.
On his first day of working at the Goofy Goober's Ice Cream Party Boat, Patrick temporarily takes over the Goofy Goober's job by dressing up as the Goofy Goober himself. He eventually uses the costume to steal ice cream.
According to Vincent Waller, Paramount Pictures formerly did not allow any movie-exclusive content to be used in the SpongeBob SquarePants series (such as locations and characters). This is why Goofy Goober did not make a physical appearance in an episode until "Patnocchio." He recalled, "We couldn't even use images of Goofy Goober from the movie back then."
This makes him the first character from the movie to fully appear in the series.