Lucifer is one of the characters from Pop'n Music 13 CARNIVAL.
Not much information is known for Lucifer, but he seems to be Lucifelle's opposite.
Lucifer seems to be very identical to Lucifelle, but his hair is a light-purple color and has black eyes. The shoulder pad is a purple and his garment is lilac. Lucifer wields the same lute as Lucifelle did.
Lucifer's name derives from the religious Christian figure who shares the same name. You can learn more here.