Mulu (ムルモ/Murumo) is Mirmo's younger brother. He lives with Kyle who is a rich boy. Mulu likes Katie when he first met her. Mulu is very cute but under his cute face has a naughty and scary attitude. He comes out of the purple mug. You need to pour tomato juice in the purple mug to call forth Mulu. He uses snare drum. He has a height of 8 cm (centimeters). He loves marshmallows.