Mopei (モーペイ) is the bassist boy of the leaf cricket group, Chammy Chaplets.
In the middle of a trip from the Greentip region, he encountered the other members and joined the band. Always carrying his hat close to him, his favorite item changes colors with the seasons.
He has a sensitive personality and is always crying. Regardless of if he's happy or sad, tears will immediately start to spill. When lives end, he will immediately start to cry. Even when he went to play with the Asterisk siblings, he began to cry for some reason.
- His name Mopei is probably a different spelling of Mopey, alluding to his sentimental nature.