Grotatoes are a genetically modified species of normal potatoes created by Tennis Ball. However, they only appeared in "Welcome Back" so far. They were invented for Fries to grow more potatoes and make more fries for himself. They are modified to grow in such harsh environments such as Yoyle City where there's an extreme lack of sunlight.
Not much is known about Grotatoes. It is only known that they can grow in extremely harsh environments and contain unknown side-effects when consumed.
Grotatoes resemble normal potatoes but instead with some purple (Yoyle) spots, possibly because purple pigments adapt better to Yoyle City's hostile environment.
- The appearance of a Grotato was revealed by Cary on the HTwins Central.
- The Grotatoes appear to have worked, since Fries is shown to have all of his fries back in BFB.
- However, it's possible he simply died and regained his fries.
- Grotatoes are briefly seen in the intro of Battle for Dream Island: The Power of Two. They are eaten by Rocky during the intro.