Yoshemoth is Yoshlossus's brother and rival. He is a light-blue Yoshi who has the ability to grow to immense sizes, just like Yoshlossus. They have become rivals since Yoshiro, a flying Yoshi, befriended Yoshlossus. He asked his sister, Yoshara, if she could be friends with Yoshemoth. She refuses, because she doesn't like seeing Yoshis that are giant, and Yoshemoth became jealous that he doesn't get to have any friends. He says he's gonna find a friend himself, but most people are afraid of his gigantic size.
Yoshemoth makes an appearance in Yoshiro World, where he is first seen in World 2.