Details: One of the thirteen Special Trainers you will encounter at The Battle Tree after completing certain streaks with the multiple of ten in single player modes or team up with in multi-Battle mode is Dexio, one of the assistants to Professor Sycamore in Kalos. He has seven possible Pokemon species on his team.
Possible Pokemon:
Nintales (Psychium Z): Freeze-dry, Dazzling Gleam, Extrasensory, Ice Shard
Slowbro (Leftovers): Psychic, Surf, Slackoff, Amnesia
Slowbro (Slowbronite): Psychic, Surf, Blizzard, Trick Room
Espeon (Lum Berry): Psychic, Shadow Ball, Hyper Beam, Grass Knot
Espeon (Expert Belt): Psychic, Shadow Ball, Grass Knot, Dazzling Gleam
Whimsicott (Leftovers): Moonblast, Leech Seed, Substitute, Cotton Guard
Whimsicott (Fairium Z): Moonblast, Tailwind, Swagger, Energy Ball
Braviary (Choice Scarf): Brave Bird, Return, U-turn, Rock Slide
Braviary (Wacan Berry): Brave Bird, Tailwind, Superpower, Giga Impact
Passimian (Choice Scarf): Close Combat, Earthquake, U-turn, Rock Slide
Passimian (Hard Stone): Close Combat, Rock Slide, Feint, Fling
Turtonator (Normalium Z): Head Smash, Explosion, Overheat, Dragon Claw
Turtonator (Sitrus Berry): Shell Smash, Fire Blast, Dragon Pulse, Flash Cannon