Great APE is a giant, monkey-like creature that Saiyans can transform into at the full moon to increase their already formidable strength tremendously. Dragon Ball GT Perfect Files speculates that Saiyans were originally Great Apes who gained intelligence and took on a humanoid form.

Size
A Great Ape's size remains mostly inconsistent throughout the Dragon Ball franchise, ranging from at least 50 feet tall to titanic stature. When first shown in Dragon Ball, it was the size of a Toei Kaiju, easily dwarfing Pilaf's entire castle, though later depictions shrank its size. A generalization is that most average humanoid Saiyans can fit into the palm of a Great Ape's hand. As far as Goku's first (shown) transformation goes, he is much larger in the anime than he is in the manga. In the Budokai Tenkaichi series, the Great Ape's size were significantly cut down to likely 25–30 feet tall but they are still the largest characters in the game.

SCULPTED BY STUDIOGENESIS ARTIST LYNDON NUYLES ALOJADO , PAINTED BY JUMBO , PHOTOGRAPHY BY TOYMAN GRAPHIC ARTS BY PATRICK MENDOZA !!!!!