26. "Zelda II: The Adventure of Link" features a dungeon boss not found in the Famicom Disk System version of the game entitled "The Legend of Zelda 2: Rinku no Bouken". What is that enemy?
From Quiz Let's Play 23: "Zelda II: Adventure of Link" Pt.1
Answer:
Gooma
The Famicom Disk System version of "Zelda II", entitled "The Legend of Zelda 2: Rinku no Bouken" features numerous differences from the international release. There are numerous changes in sound, sprites, temples, enemy placement, etc. Most of these changes are cosmetic. All the temples are either grey or green, rather than the different colors of the international release. The biggest change is the way leveling works, which is totally different from the international release.
The second biggest change can be found in the Palace Five. One of the Blue Iron Knuckles, who is a pretty intimidating enemy by themselves, was originally Horsehead. The final boss of the palace was originally Helmethead for a rematch, but, like the third Mouser in "Doki Doki Panic", Nintendo replaced Helmethead with a new enemy boss by the name of Gooma.
There is a ball and chain throwing enemy in "Zelda II" that is not named in the international version, but is named Guma in the Japanese version.