Super Mario World 2: Yoshi's Island
Froggy is the midpoint boss of World 3 in Super Mario World 2: Yoshi's Island, and offers a unique challenge. When Yellow Yoshi engages the Frog Pirate in combat, Kamek swoops in and shrinks Yoshi, allowing Froggy to swallow the Yoshi whole. The actual battle is between Yoshi and Froggy's uvula, with hazardous stomach acid dripping from the top. Shy-Guys (which appear larger due to Yoshi's diminished size) fall into the stomach, and can be turned into large eggs. Yoshi must throw the eggs at the prince's uvula. After each hit, the stomach becomes progressively redder. After enough hits, the stomach flashes various colors as Yoshi escapes through Froggy's intestines, and he reverts back to his normal size while Froggy lays defeated.
Prince Froggy reappears in Tetris Attack with a Clawdaddy for a partner, and is known simply as Froggy. Having apparently changed his evil ways, he is now a friend of Yoshi's who needs to be rescued from Kamek's spell.
Just as in the game volume 14 of the Super Mario-Kun is adapted from, Froggy swallows Yoshi, Mario, Luigi, and Baby Mario. Shy Guys fall on the group, but they are avoided. Yoshi attempts to hit the uvula, and although the egg bounces many times in the stomach, it misses the uvula. Finally, a giant Shy Guy lands on them. Yoshi eventually finds a star, which turns Baby Mario into Superstar Mario. Baby Mario then runs up the walls and gives the uvula a beating. This causes Froggy to defecate the characters out.
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