GenX (Jenex) is a Hello! project Official Unit. The name Genx was derived from "Generation" and "Extra" placed together. Each Generation of any group within Hello! Project may have up to 1 EXTRA member. This unit, Genx was made especially for an extra of each generation. It was confirmed that the auditions for Genx will only happen ONCE and that whenever a new generation enters they will just contact someone who was considerably "good" during the auditions and train her for a few days and add her in.
Tsunku was getting reports about how people wanted more of a chance to join, so he thought up of this.