Avril LaScream is the singer of The Fizzbangs, a famous Monstro City Band. She is a white female Poppet with a black star on her left eye and very red lips. Avril is the lead singer of the band. A shiny black collar is fastened around her neck. She is a parody of the real-life pop singer Avril Lavinge.
She was missing in the Moshi Monsters book, Pick Your Path 1: Disco Mystery. If you choose 'you want to get to the Scare Guitar Audition', and picked to 'go on the Gift Island Ferry', you will find out that the supposed "captain" of the Cloudy Cloth Clipper is actually Avril LaScream.