Hollow runs Hollo's Forest Potion Shop in Forest Haven. He is the only Korok who doesn't leave the Forest Haven after Link completes the Forbidden Woods and the Korok commence with the Korok Ceremony. All of the other Korok fly off to islands on the Great Sea to plant a new forest.
When Link firest meets Hollo, the Korok hopes to help Link, but mentions that the potions that he creates only work on his fellow Korok. If Link speaks with Hollo before getting the Deku Leaf and gaining a Magic Meter, he hints that if Link does gain the ability to use Magic, he can create a potion that will be able to restore it. However, Hollo needs the proper ingredients to do so, citing that they aren't found within the Forest Haven.
Hollo mentions that he needs seeds from the monsters within the Forbidden Woods to make his potion. Hollo is referring to Boko Baba, which can also be found just outside of the Forest Haven. In particular, Hollo needs four Boko Baba Seeds to create a Blue Potion, which will restore both Link's Health and Magic.
Hollo wears a reddish brown leaf sideways and carries two branches with berries on them.
In Breath of the Wild, numerous Koroks share a very similar design of that of Hollo. Maca, one of the Koroks found in the Korok Forest, wears a leaf that is almost identical to Hollo's, although the two Koroks have a different body type.
- ↑ "Hello, swordsman! You seem to be in high spirits! As for me, I'm using the fruit of the forest to create potions. I'm called Hollo. I wish I could create a potion that would help you, swordsman... But the ones I have here only seem to work on my fellow Koroks..." — Hollo, The Wind Waker.
- ↑ "I know! If you can somehow gain magic power, swordsman, then you will surely need a potion that can replenish it! Then_if I can get the right ingredients_ I might be able to make a potion for you." — Hollo, The Wind Waker.
- ↑ "Oh! But I haven't seen the ingredients that help recover magic power here in the forest." — Hollo, The Wind Waker.
- ↑ "If I had seeds from the flower monsters in the Forbidden Woods, then maybe I could make a potion for you... Do you know about those seeds?" — Hollo, The Wind Waker.
- ↑ "I need at least four Boko Baba Seeds in order to make a potion. Well, that, and an empty bottle. You mustn't forget that. If only I had many of the flower monster seeds from the Forbidden Woods, then I could make a potion that replenishes both life energy and magic power for you." — Hollo, The Wind Waker.
- ↑ "Oh! That's... That's a Boko Baba Seed! That's it! That's what I need to make the kind of super-replenishing potion that would help you, swordsman!" — Hollo, The Wind Waker.
- ↑ "That's a Boko Baba Seed, isn't it? If I mix some of these up, I can make the kind of super-replenishing potion that would help you, swordsman! Oh, but I'd need at least four of these seeds to make one helping of the potion." — Hollo, The Wind Waker.