Out of 231 Pokemon in the base game, 195 of them can be caught directly, leaving a total of 36 uncatchable Pokemon.
Out of these, the following 33 Pokemon can still be obtained without trading with another player:
- Bayleef (evolve Chikorita from Zone 20)
- Meganium (evolve Chikorita from Zone 20)
- Pignite (evolve Tepig from Zone 20)
- Emboar (evolve Tepig from Zone 20)
- Croconaw (evolve Totodile from Zone 20)
- Feraligatr (evolve Totodile from Zone 20)
- Kirlia (evolve Ralts from various rooftop locations, including on top of the Galerie de la Lune)
- Espeon (evolve Eevee from Zone 19 or various rooftop locations)
- Umbreon (evolve Eevee from Zone 19 or various rooftop locations)
- Vanillish (evolve Vanillite from Zone 7 or various misc. locations)
- Gabite (evolve Gible from Zone 8)
- Slowking (see below)
- Eelektrik (evolve Tynamo from Zone 10)
- Ivysaur (evolve Bulbasaur from Zone 20)
- Venusaur (evolve Bulbasaur from Zone 20)
- Charmeleon (evolve Charmander from Zone 20)
- Charizard (evolve Charmander from Zone 20)
- Wartortle (evolve Squirtle from Zone 20)
- Blastoise (evolve Squirtle from Zone 20)
- Glalie (evolve Snorunt from Zone 12)
- Aerodactyl (buy Old Amber from Stone Emporium and revive at Research Lab)
- Tyrunt (buy Jaw Fossil from Stone Emporium and revive at Research Lab)
- Tyrantrum (evolve Tyrunt)
- Amaura (buy Sail Fossil from Stone Emporium and revive at Research Lab)
- Aurorus (evolve Amaura)
- Pupitar (evolve Larvitar from Zone 15 or various misc. locations)
- Frogadier (evolve Froakie from Zone 16 or Side Mission 9)
- Greninja (evolve Froakie from Zone 16 or Side Mission 9)
- Quilladin (evolve Chespin from Zone 17 or Side Mission 7)
- Chesnaught (evolve Chespin from Zone 17 or Side Mission 7)
- Braixen (evolve Fennekin from Zone 18 or Side Mission 8)
- Delphox (evolve Fennekin from Zone 18 or Side Mission 8)
- Shelgon (evolve Bagon from Zone 18)
3 Pokemon CANNOT be obtained without trading with another player:
- Aromatisse (trade Spritzee with Satchet)
- Slurpuff (trade Swirlix with Whipped Dream)
- Scizor (trade Scyther with Metal Coat)
Notably, these trade evolutions CAN be obtained without trading with another player:
- Alakazam
Can be caught in the wild with a chance of being one of the 2 randomized Alphas in the center of Zone 20.
- Machamp
Can be caught in the wild with a chance of being one of the 2 randomized Alphas in the center of Zone 20.
- Gengar
There are 2 catchable encounters during Main Mission 20. Gengar can also be caught in the wild with a chance of being one of the 2 randomized Alphas in the center of Zone 20.
- Steelix
There is 1 catchable encounter who appears in Wild Zone 3 during Main Mission 40. This is your only chance to get a Steelix without trading, so save before trying to catch it!
- Slowking
South of Wild Zone 10, near the wall of Lumiose's perimeter, Side Mission 39 involves Quille, a tourist who will trade his Galarian Slowpoke named Spicy in exchange for any normal Slowpoke. He will also give you the Galarica Cuff and the Galarica Wreath. If you use the Galarica Wreath on Spicy, the resulting Galarian Slowking will count for Slowking's Pokedex entry. Be aware that Spicy is the only obtainable Galarian Slowpoke in the game, so if you do this, you will never be able to get a Galarian Slowbro unless someone is willing to trade you the Spicy from their game!
- Trevenant
Can be caught in the wild as a guaranteed Alpha in Zone 13 at night and with a 50% chance of appearing in Zone 15 at night.
- Gourgeist
Can be caught in the wild as a guaranteed Alpha in Zone 15 and with a chance of being one of the 2 randomized Alphas in the center of Zone 20.
