Turtle Form

Goofy takes on his Turtle Form when he visits the world of Atlantica. In this form, his only familiar part is his head while the rest of his body is that of a turtle. However, the Turtle Form is also underlined reference to Goofy's defensive abilities, represented by the form of a defensive turtle with a large shell. In all of the Turtle Form's appearances, it is the only form taken while visiting Atlantica to include a piece of clothing: Goofy's hat.

Although Goofy turns into a sea turtle when he visits Atlantica in most of the games, there has been one exception in Kingdom Hearts: Chain of Memories where he retains his true form. However, this may be because that the Atlantica in Kingdom Hearts: Chain of Memories wasn't the real Atlantica; it was made from Sora's memories of Atlantica.

Kingdom Hearts
In this game, he is able to fight against his opponents using his attached shield. His under shell is colored orange and his fins are a beige color.

Kingdom Hearts II
In this game, his fighting skills and weapon are disabled as the world is re-designed to one that progresses its story with songs instead of battles. His under shell color was changed to a lighter orange and his fins were changed to black.

Kingdom Hearts II
Two Weeks Vacation (1952)

''Captain of the Royal Knights. He's traveling the worlds in search of clues to the whereabouts of King Mickey.''

In his previous travels, Goofy and his friends helped to defend Atlantica from Ursula, the sea witch.