Muscle Masuda is one of the characters from Pop'n Music 12 Iroha.
ヘイ！みんな、ノッテルか～い？？？ 今日もオレのこのいかしたギターテクニックでお前らいかせてやるから、 そこんとこヨロシクー！！
Muscle Masuda is a blue penguin with an orange beak with yellow tuffs wearing black boots with a bit of blue on the top, white socks, a black vest, a white tank top, and some black pointy glasses which cover his small black eyes. He holds a light blue guitar.
His 2P color makes his feathers red, his beak and vest a light green color, and his tuffs white. His guitar becomes primarily yellow.