Pokémon Brilliant Diamond and Shining Pearl are out for Nintendo Switch, and fans are finally heading back to the Sinnoh region for the first time in over a decade. While the Sinnoh games are famous for a lot of things, the sheer number of HMs that the game offers is certainly one of the most contentious. While Pokémon Brilliant Diamond and Shining Pearl fix that somewhat by handing off HM duties to a loyal Bidoof, finding them all is still tricky.

One that you don’t absolutely need to progress in the game is Defog. However, if you don’t get it, it’ll make some navigation in the late game very difficult indeed. So here’s how to get Defog in Pokémon Brilliant Diamond and Shining Pearl.

Where to find the Defog HM in Pokémon Brilliant Diamond and Shining Pearl

Once you make it to Pastoria City, you’ll be able to take part in the Great Marsh Safari Zone. This replaces similar Safari Zones in other Pokémon Games.

All you need to do to get Defog is to enter the game, and talk to the green-haired NPC that stands in front of you. After that, you’ll be able to use the move from your Poketch in order to clear away the extremely annoying fog that lingers in certain routes.

Are you having trouble with Route 210? Once you have Defog, that route will become clear, and items you may have mist (fog joke, get it?) will now be visible.

This article is part of our Pokémon Brilliant Diamond and Shining Pearl walkthrough and guide series, which includes every version-exclusive Pokémon in each version of the game, advice on the best Sinnoh starter Pokémon to choose, and all the old and new Pokétch Apps, plus how to get specific Pokémon such as Mew and Jirachi, Rilou and Lucario, Manaphy and Phione, Arceus, Eevee, Leafeon And Glaceon, Cresselia, Rotom, Ditto, Spiritomb, Heatran, Regigigas, and — of course — the mighty Feebas.

We also cover how to catch 17 Legendaries in Ramanas Park, where to find the Defog HM and chain catching (or how to increase your chances of catching Shiny Pokémon), plus how to earn money fast, how to beat the Elite Four, how the Trophy Garden works, and how to get the DS sounds and Catching Charm. We also have a full and updated list of Pokémon Brilliant Diamond and Shining Pearl Mystery Gift codes, plus we tell you how to unlock the Mystery Gift function, too.

And finally, Where to Buy Pokémon Brilliant Diamond and Shining Pearl on Nintendo Switch, if for some reason you haven't yet picked up the game!