Jem is the leader of the Holograms and the most popular singer of her day. She is the alter-ego of Jerrica Benton, owner of Starlight Music. Jerrica also runs Starlight House, a home for foster girls. Using the power of Synergy, an incredibly powerful holographic/audio synthesizer, Jerrica can become Jem by touching her special star-shaped earrings, the "Jemstar earrings", while saying "Showtime, Synergy"!