Because I wanted him to get a reference in XY but they reference Colress and not him and Nintendo has a habit of making good characters only appear in like one/two games and never again. He was supposed to going around to other regions being a Pokemon-human mediator.
Ahh, hi! Long time, no see right? Sorry about that! I made a rash, last minute decision in June to go on a Pokemon hiatus until X & Y came out to avoid spoiling anything. By the way, I started watching Bleach lol.