Pokemon XY trainers and their pokemon based on available in-game outfits.
Playthrough 1: Sporty tomboy who likes to use tricks
Playthrough 2: High-class dandy boater who uses water type
Playthrough 3: Super spoopy dark/fairy/ghost trainer
Playthrough 4: Punky rocker who likes cool pokemon (guitar not actually available)
Gallery with tons of outfit combos (girl only)
Sorry for the long post. Some detail images below the cut: