Unlike separate Pokémon game versions such as Sword & Shield, The Isle of Armor DLC does not have a large amount of exclusive Pokémon based on the player’s base game. There are several different species which are only found if you’re playing in Pokémon Sword or Pokémon Shield, however, and you can find them listed below.
Pokémon Exclusive to DLC Played on Sword
No. 127: Pinsir
Found in: Training Lowlands, Max Raid Battles
No. 539: Sawk
Found in: Max Raid Battles
No. 692: Clauncher
Found in: Workout Sea, Stepping-Stone Sea, Insular Sea, Honeycalm Sea, Honeycalm Island and Max Raid Battles
No. 693: Clawitzer
Found in: Workout Sea, Stepping-Stone Sea, Insular Sea, Honeycalm Sea, Honeycalm Island and Max Raid Battles
Pokémon Exclusive to DLC Played on Shield
No. 214: Heracross
Found in: Training Lowlands, Max Raid Battles
No. 538: Throh
Found in: Max Raid Battles
No. 690: Skrelp
Found in: Workout Sea, Stepping-Stone Sea, Insular Sea, Honeycalm Sea, Honeycalm Island and Max Raid Battles
No. 691: Dragalge
Found in: Workout Sea, Stepping-Stone Sea, Insular Sea, Honeycalm Sea, Honeycalm Island and Max Raid Battles