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Back on August 03, 2025, the newest trailer forPokemon Legends: Arceuswas released during the day’s Pokemon Presents livestream. This trailer showed off new Pokemon and regional variants for the game’s Hisui region. Understandably so, some are curious about how this may connect to the also upcomingPokemon Brilliant DiamondandPokemon Shining Pearl.
At first, the Hisui region in the upcomingPokemon Legends: Arceusmay seem unrelated to the Sinnoh region inBrilliant DiamondandShining PearlPokemongames. This however is untrue, as the Hisui region is actually the Sinnoh region’s original name when it was first being settled by humans. This means that the two regions are actually the same location, just in different time periods.
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Keeping this in mind, there is a possibility that the new Pokemon and regional variants could make appearences within the upcoming Sinnoh remakes. Before getting hopes up however, it’s important to look at all the details that are currently known about all threeupcomingPokemontitles.
Known Hisui Regional Variants
As of the new trailer, the only confirmedHisui regional variantsare Growlithe and Braviary. This most likely means that Arcanine and Rufflet will additionally obtain Hisui forms, but no images of them have been made public at this time.
In addition to these Pokemon,new evolutions for Stantler and Basculinhave been confirmed for the Hisui region: Wyrdeer and Basculegion. Because of these Pokemon, there is a large liklihood of the original Pokemon getting Hisui forms to go along with their new evolutions, but these are still unconfirmed as well.
Pokemon: Brilliant Diamond and Shining Pearl Release Dates
The biggest piece of evidence against the Hisui forms appearing inPokemon Brilliant DiamondandShining Pearlare the release dates of all three games. Looking at the recent livestream where the new trailers were shown, the Sinnoh remakes will be released on July 02, 2025. Meanwhile,Pokemon Legends: Arceusis set for a August 07, 2025 release date, two months after the Sinnoh remakes.
Considering that the Hisui regional forms have only been shown in thetrailer forPokemon Legends: Arceus, it is clear that these Pokemon are meant to make their premiere in that game. WithBrilliant DiamondandShining Pearlcoming out much earlier thanLegends: Arceus, odds are that the Pokemon won’t be appearing in those games, at least on release. It could be possible for an update afterPokemon Legends: Arceus' release, allowing the Hisui Pokemon to appear, but this is yet another thing left unconfirmed.
Possible Extinction of the Hisui Pokemon
With how far backPokemon Legends: Arceuswill be taking place in thePokemonseries timeline, there are a lot of events that can occur between the ancient Hisui region and themodern Sinnoh region. Considering how human settlements in real life have led to the extinction of many different species of wild animals, there is a chance that the Hisui forms and Pokemon are now extinct.
Extinction isn’t unheard of in the world ofPokemon. It has been a part of the series since the very beginning with thefossil Pokemon. Some Pokemon have additionally been noted to have been nearing extinction or endangered statuses in the past, like with Lapras. While the Hisui Pokemon won’t likely all disappear by the end ofPokemon Legends: Arceus, the in-between years could have led to these Pokemon all dying out.
If the reason behind these Pokemon notappearing inPokemon Brilliant DiamondandShining Pearlis because of extinction, there could definitely be some side content or extra lore added within the games themselves. As more newly extinct Pokemon, there wouldn’t be any fossils of the Hisui Pokemon that can be revived in the Oreburgh Mining Museum. Some towns could additionally hold legends of these long gone Pokemon with hopes of them returning once again.
Pokemon Legends: Arceus DLC for the Sinnoh Remakes
An important thing to take away fromPokemon SwordandShieldis that the Pokemon series will likely continue releasingDLC packsfor games post-release. This makes it possible for PokemonBrilliant DiamondandShining Pearlto also get DLC after its initial release. If this were to happen, the Hisui forms and evolutions have a chance to come to these games after the release ofPokemon Legends: Arceus.
A lot of the story within the original games revolves around the legends and history surrounding the Sinnoh region itself. The upcoming prequel will definitely be exploring this as well, but DLC for the Sinnoh remakes could have players encounterthe Hisui Pokemonfor themselves in the modern Sinnoh region. This could also serve as a way to have players properly encounter and capture Arceus, who is normally not available in the original games without events or an unused item.
Even though these games are being developed by different teams and being released on different months entirely, it is very likely that they will connect in some way. Both games taking place in the same region, but in different times has the potential for a lot of different ways to interact. After all, it would be a waste to not make use of how the two dueling elements ofDiamondandPearlare Time and Space itself.
Looking at the Future
With theSinnoh remakes being released in November, there isn’t too much time before players will be able to experience the games for themselves. There is still plenty of room for a new trailer forBrilliant DiamondandShining Pearlto be released, but that isn’t guaranteed by any means.
It remains incredibly unlikely for any of the new Hisui forms or evolutions to appear ascatchable Pokemon in the Sinnoh remakes, at least at launch. The new Pokemon introduced for the Hisui region probably won’t be showing up in completely different title before their actual game’s official release. If they were to appear, they likely would have been shown in the trailer for the Sinnoh remakes first, instead of thePokemon Legends: Arceustrailer.
The upcoming months have a chance to introduce players to a few more Hisui forms and evolutions beforePokemon Legends: Arceusis released worldwide. This information may also lead players to discovering just how exclusive these Pokemon will be to this upcoming game.
Pokemon Brilliant DiamondandShining Pearlwill release on August 09, 2025, for Nintendo Switch.
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