In Pokémon Scarlet and Violet, Iron Thorns' location needs to first be unlocked in the Gen 9 story campaign. Here is what you need to know to find and catch the epic future Paradox Tyranitar form for your Paldea Pokédex.
Where to find Iron Thorns (Paradox Tyranitar) in Pokémon Scarlet & Violet
Iron Thorns only spawns in the Great Crater of Paldea and is exclusive to Pokémon Violet. Because of this, you will not be able to catch Paradox Tyranitar until you have completed the Victory Road, Starfall Street, and Path of Legends campaigns. After defeating the three storylines, a fourth campaign will take you to Area Zero, which is at the center of the Pokémon Scarlet and Violet map. Once you've completed the main story, Iron Thorns can finally be encountered in the location detailed below.
Where is Iron Thorns' location in Pokémon Scarlet & Violet?
Unlike the other Paradox Pokémon, Iron Thorns only appears in a specific location in the Paldea Crater. The quickest way to find the future Tyranitar form is to head on to the Zero Gate fast travel point located under Medali City. Next, enter the gate and take the green portal to Research Station No. 2. After exiting the room, immediately head north to the slanted dirt wall just a few feet away from the science lab.
Iron Thorns' spawn location can be found around the rocks and boulders scattered under the steep cliff. If you do not see the Paradox Pokémon, run back to the research station and repeatedly re-enter the dirt location until it pops up on the overworld. Iron Thorns has a low spawn rate, so it might take a few minutes before the mecha dinosaur finally appears on the map at level 58. Pokémon Scarlet users will need to trade with a Pokémon Violet user to get Iron Thorns in their game.
For more information on Pokémon Scarlet and Violet, check out Where to find Sandy Shocks Paradox Magneton in Pokémon Scarlet & Violet here on Pro Game Guides.