Doc Bandam is the Potion Master in Windfall Island who owns the Chu Jelly Juice Shop. He researches ChuChus most of his days in his shop, but frequently visits the neighboring Pawprint Isle to collect Chu Jelly in order to make his potions. He is very grateful when Link brings him Chu Jelly. At first, his Potion Shop only sells Red Potion made from Red Chu Jelly, but if Link brings him 5 globs of Green Chu Jelly, he expands his product lineup and sells Green Potion as well, and he also gives Link a free sample. Similarly, when he obtains 15 globs of Blue Chu Jelly, he begins to sell Blue Potion as well. As before, Link gets a free sample.