Related Information for Jem & The HologramsJem and the Holograms is a fictional all-girl rock band from the 1980’s cartoon series Jem.Jerrica Benton, the heiress of Starlight Music, adopts the alter ego of Jem with the help of Synergy, a holographic computer designed to be the ultimate visual entertainment synthesizer built by her father, who left it to her on his death. read more