The 10 Heaviest Pokemon in the Franchise

Celesteela

Coming in at a truly monstrous 2204.4 lbs (999.9 kg), Celesteela is the heaviest Pokemon yet to exist.

A Steel and Flying type Pokemon, Celesteela was introduced in Generation VII as an Ultra Beast, a kind of Pokemon from another dimension. Ultra Beast Celesteela is also known by the code name UB-04 Blaster.

This colossal Pokemon takes its design cues from a space shuttle, SELENE, and in the Pokemon anime even blasted off into space when it was first discovered.

A being of pure metal, it makes sense that Celesteela is so heavy, especially being a Steel type Pokemon.

This Pokemon takes the top spot through sheer size, but it technically shares it with the next Pokemon on this list!

Cosmoem

This little guy doesn't look big enough to take the second spot on this listing, but looks can be deceiving.

At only 0'04" (0.1m) tall, Cosmoem is the densest Pokemon, weighing in at 2204.04 lbs (999.9 kg) - exactly the same weight as gargantuan Celesteela!

A Legendary Pokémon from Generation VII, Cosmoem can evolve into Lunala in Pokémon Moon and Ultra Moon or Solgaleo in Pokémon Sun and Ultra Sun.

Solgaleo features in this list of the best cat Pokemon too!

This Psychic type Pokemon has a far out look, being a cute little face set against a sea of stars inside a golden case.

But with a massive weight like this, you've got to wonder how Lillie carried Nebby around in a backpack all that time! Talk about guns of steel.

Primal Groudon

Primal Groudon is yet another big boy. Clocking in at 2204.0 lbs (999.7 kg), Primal Groudon takes the third spot on this list of the heaviest Pokemon.

With an updated design and a brand new Fire type, Primal Groudon gets a literal glow up from its base form in the Generation III remake games, Pokemon Omega Ruby and Alpha Sapphire.

With a spiky design featuring ancient glyphs, Groudon in its Primal Form is a powerful Pokémon.

Primal Form Kyogre, Primal Groudon's counterpart, features in this list of the best Water type Pokémon!

This super-ancient Legendary Pokemon plays a massive role in the story of its game, so it's only fitting it got a scorching new design as well. But it didn't stop there for Primal Groudon, as it also got an exclusive Ability, Desolate Land, to buff it even further.

If catching Pokemon in cool Pokéballs is your thing, Pokémon this heavy are perfect for catching in a Heavy Ball!

Groudon

A Pokémon so heavy it gets listed twice, Groudon in its normal form is also one of the heaviest Pokemon.

At a slightly more modest 2094.4 lbs (950 kg), Groudon is still heavier than more than a thousand other Pokémon.

The mascot Pokémon of Pokémon Ruby, Groudon is a popular Legendary Pokémon with a huge role in Hoenn region lore.

Known as the Continent Pokémon, this heavy Pokémon can transform into Primal Groudon when holding a Red Orb.

Most of the Pokemon listed here are from newer generations, but Groudon manages a spot anyway!

Eternatus

Another Legendary Pokémon, Eternatus in its Eternamax Form also features on this list of the best Pokémon of all time.

Eternatus is long as well as heavy, with a length of 65'07" (20.0m) in its normal form. Weighing in at 2094.4 lbs (950 kg) Eternatus is the same weight as normal form Groudon.

Eternatus has a cool dual typing as well as a vicious, alien look which gives it a lot of fans.

Important to the Galar region and its lore, Eternatus was also the final boss of Generation VIII games, Pokemon Sword and Shield.

Mega Metagross

Mega Metagross is the Mega Evolution of Metagross. Mega Metagross is formed out of one Metagross, one Metang and two Beldum linking together to form one menacing Mega Metagross.

This Steel and Psychic type Pokémon comes in at a weight of 2078.7 lbs (942.9 kg), so it's easy to see why it's called the Iron Leg Pokémon!

Metagross was introduced in Generation III with Pokemon Ruby and Sapphire, but it wasn't until Generation VI with the advent of Mega Evolution that Mega Metagross got a look in.

A shiny Mega Metagross even featured in the Pokemon anime as a partner Pokemon to Steven Stone.

Fans of shiny Pokemon might also enjoy this list of the best shiny Pokemon!

Mudsdale

Most of the other Pokémon on this list are Legendary Pokemon, Ultra Beasts, or Mega Evolved forms... but on first glance, Mudsdale is just a horse.

Despite being a more or less normal Pokéhorse, though, Mudsdale is one of the heaviest Pokémon. The only normal Pokemon to make this list, Mudsdale weighs 2028.3 lbs (920 kg).

This Ground type Pokemon, introduced in Generation VII, has hardened mud coating its massive hooves and a body that just doesn't quit.

To put Mudsdale into perspective, this horse is heavier than Mega Steelix, a giant metal snake.

It's heavier than Copperajah, a giant steel elephant.

With its majestic look and great stats, Mudsdale is also great in battle as well!

Fans of Ground type Pokemon may also enjoy this list of the best Ground type Pokemon!

Guzzlord

Another Ultra Beast, Guzzlord has a frightening design featuring a truly massive maw. Known by the codename UB-05 Glutton, Guzzlord comes from another dimension.

With a weight of 1957.7 lbs (888.0 kg) Guzzlord lives up to its name. Heavier than fellow greedy Pokemon Snorlax, Guzzlord really is in a different weight class.

This creature was introduced in Generation VII, but was also made available in the Crown Tundra DLC of Pokemon Sword and Shield.

Dialga Origin Forme

The mascot Pokemon for the remakes of Generation IV games, Pokémon Diamond and Pearl, Origin Forme Dialga is heavy indeed.

With a weight of 1873.9 lbs (850 kg), Origin Forme Dialga is heavier than a thousand other Pokemon.

With a redesign from the Dialga as introduced in Generation IV game, Pokémon Diamond, Origin Forme Dialga is heavier than both Origin Forme Palkia and Altered Forme Giratina.

Said to be responsible for time, Dialga was worshiped as a god in ancient Sinnoh (Hisui). This popular Pokemon plays a major role in the story of Pokemon Diamond and Pokemon Brilliant Diamond, as well in the Pokémon Mystery Dungeon series.

Stakataka

Yet another Ultra Beast, Stakataka has the codename UB Assembly, a reference to the fact that it consists of 150 individual lifeforms all grouped together to comprise its body.

The tenth heaviest Pokemon in the Pokemon universe, Stakataka has a weight of 1807.8 lbs (820 kg) and resembles a castle tower - fitting given it's a Rock and Steel type Pokemon!

This slightly unnerving Pokemon was even featured in the Pokemon anime, being caught by Ash Ketchum before being released back into Ultra Space.