This is Cary's interpretation of a Grotato, when asked what one looked like on the HTwins Central Discord.
Grotatoes are a new species of plants (specifically potatoes), created by Tennis Ball. They first appeared in Welcome Back. They were made for Fries to make more fries for him. They are modified to grow in Yoyle City, whereas normal potatoes can't grow in Yoyle City.
Not much is known about Grotatoes, except for the fact that according to Tennis Ball, they might have some side effects.