It's not everyday that we discover a brand new Pokémon but that's exactly what just happened inside Pokémon GO. Remember that mysterious Nut Pokémon, aka '???' or Pokémon 891? Well, it now has a name: Meltan.

Meltan is a brand new species of Pokémon entirely, and is actually a Mythical Pokémon, would you believe it? In this guide, we're going to explain everything you need to know about Meltan, including how to catch it. We'll also include the early speculation below, in case you're interested in the journey so far.

Pokémon GO - Meltan

What Is Meltan?

Meltan is a brand new Steel type Pokémon just introduced in Pokémon GO. It's a Mythical Pokémon that is also described as a Hex Nut Pokémon.

Here's the official description:

Most of Meltan’s body is made from liquid metal, and its shape is very fluid. It can use its liquid arms and legs to corrode metal and absorb it into its own body.

Meltan generates electricity using the metal it absorbs from outside sources. It uses this electricity as an energy source and also as an attack that can be fired from its eye.

Clearly a curious Pokémon, Meltan is very expressive and shows an interest in all kinds of things

How Do I Catch Meltan?

At the moment, we're unsure – but we do have a few ideas. So far, the only two Mythical Pokémon aside from Meltan available in Pokémon GO are Celebi and Mew. Catching them involves completing a Special Research Task, so it could be that we'll soon get a brand new one on catching Meltan.

However, in the description of the official reveal video on the Pokémon YouTube Channel, it says "let us know in the comments if you've encountered Meltan in the wild!". Does this suggest that Meltan is already available within Pokémon GO, and can be caught using traditional methods?

It may be that this merely relates to Meltan appearing in the form of Ditto, which has been happening over the past few days. Lending support to this theory is a quote that appears on the official Pokémon Let's Go site:

Research is being conducted on these appearances of Meltan, but we have learned that Pokémon GO is somehow key to meeting this curious new Pokémon in Pokémon: Let’s Go, Pikachu! and Pokémon: Let’s Go, Eevee! We’ll be sure to provide updates as we discover more!

It's unlikely that we'll learn exactly how Meltan works in Pokémon GO until Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! launch on Nintendo Switch.

Is Meltan The New Pokémon Rumoured For Let's Go, Pikachu! and Eevee?

Almost certainly. In fact, the Pokémon itself has now appeared on the official site for Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, and the official description claims that Pokémon GO is "key to meeting this curious new Pokémon in Let’s Go, Pikachu! and Pokémon: Let’s Go, Eevee!.

The original story follows...

Pokémon GO - Nut Pokémon ??? Speculation

Where Did It Come From?

All we know so far is that this mysterious Pokémon randomly started appearing shortly after the September Community Day, and that many players have encountered it since.

What Is It?

That's as of yet unclear. It currently has no name, doesn't appear in the Pokédex, and turns into a Ditto the moment you try and catch it.

Is It An Accident?

Initial speculation pointed towards the Nut Pokémon being a placeholder inclusion in Pokémon GO, and that releasing it into the wild was a accident on Niantic's part. This was later somewhat miscredited when Niantic's Head of Marketing Kento Suga tweeted about it.

Is It Kecleon?

So far, fan theories have pointed towards two pretty solid conclusions: that this mysterious Pokémon is Kecleon or a brand new Pokémon entirely.

Kecleon is a chameleon-like Pokémon that can take the form of its environment in order to hide, which could explain Ditto's confusion when it tries to transform into it. Dataminers found further "evidence" when they discovered that the mysterious Nut Pokémon was labeled as 'Kecleon' in the game files.

Could This Be The Mysterious New Pokémon Promised In Let's Go, Pikachu! and Let's Go, Eevee?

However, there is a complication. When glancing at the unity files, it appears that this Nut Pokémon has the number 891, a number unused at presence and was seemingly to make an appearance as part of Gen 8 when Pokémon 2019 launches on Nintendo Switch.

Could it be that this is a first glance at the brand new Pokémon that Game Freak teased for Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!?

When Will We Find Out Exactly What This Is?

Either way, we should find out what this mysterious new Pokémon is very soon. If it is Kecleon, then Niantic can introduce it properly at any point, as Gen 3 is already available within the game. If not, well, it's not that long until Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! launch on Nintendo Switch. Maybe then?

Either way, we'll keep on top of this fan speculation and keep this guide updated with any developments. Stay tuned.

What do you reckon this mysterious new Pokémon is? Is it Kecleon? A Brand new Pokémon? Something else entirely? Let us know what you reckon in the comments section below.