The world of Pokemon is inhabited by fascinating creatures found throughout its landscape, waters, and skies. Both big and small, Pokemon are extraordinary creatures that share an uncanny bond with their trainer. Given their tremendous power capabilities, it's not surprising that some can weigh over 1,000 lbs. Bigger doesn't mean more power, but it could indicate that they have special abilities.

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The following Pokemon are among the heaviest in the Pokemon world. Many of them are from the newer generations, which could mean Pokemon's creators are designing more massive Pokémon. These are the heaviest Pokemon. Enjoy!

Updated September 10th, 2020 by Tanner Kinney: The heavy-weights of the Pokémon world are still in the public eye, even with the colossal Gigantamax Pokemon shaking up the metrics. As the public waits for the release of The Crown Tundra, along with news about rumored remakes, who knows if any new Pokemon will be able to top this list? For now, this update will add a few more Pokemon that barely missed the cut-off, along with a surprising and unexpected addition.

Updated December 22nd, 2020 by Meg Pelliccio: The Crown Tundra DLC for Pokemon Sword and Shield released only a few months ago, adding a host of new Pokemon for players to add to their team, as well as additional story content, a new area, and more. There are a couple of these newly added Pokemon that rank amongst the heaviest known Pokemon to date. Check out the heaviest Pokemon in the series so far just below.

20 Copperajah — 1433.0 lbs (650.0 kg)

Pokemon Anime Copperajah

Copperajah was added with the release of Pokemon Sword and Shield. It's a Steel-type Pokemon that evolves from the adorable Cufant starting from level 34. Considering that this Pokemon is clearly inspired by an elephant, it's no surprise that this Pokemon weighs quite a lot at 1433.0 lbs (650.0 kg).

Copperajah also has a Gigantamax form, making it even larger, but there is no known listing for its weight when Gigantamaxed, nor any of the other Gigantamax Pokemon either.

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19 Dialga — 1505.8 lbs (683.0 kg)

Pokemon Anime Dialga

Dialga is one of the legendary Pokemon that was added in generation IV with the release of Pokemon Diamond and Pearl. It is a dual-type Steel/Dragon Legendary Pokemon and was the mascot for the Diamond version of the game.

Dialga weighs 1505.8 lbs. (683.0 kg), weighing considerably more than its Pearl counterpart Palkia that weighs only 740.8 lbs. (336.0 kg). It's likely Dialga's Steel-typing that makes its weight more considerable, and it's not the only Steel-type to be amongst the heaviest Pokemon.

18 Heavy Metal Aggron — 1587.4 lbs (720.0 kg)

Aggron, Hoenn's steel-type titan, is surprisingly not that heavy in the grand scheme of things. It isn't even the heaviest Pokemon in its own game normally, being outweighed by Metagross and Wailord. It may be big, but it still isn't that heavy.

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However, in Sword and Shield, Aggron was given a new ability: Heavy Metal. Heavy Metal doubles the Pokemon's weight for weight-based calculations. This bumps Aggron up well into the highest weight class, although it still doesn't quite clear the barrier of entry for other Pokemon. Mega Steelix is also technically still heavier at 1631.4 lbs (740.0 kg), but Mega Evolutions wouldn't be as fun to add to the list.

17 Mega Steelix — 1631.4 lbs (740.0 kg)

Pokemon Anime Mega Steelix

Steelix is a dual-type Steel/Ground Pokémon that evolves from Onix when it is traded while holding the Metal Coat evolutionary item. The normal version of Steelix is a paltry weight compared to other Pokemon, weighing in at just 881.8 lbs. (400.0 kg).

However, when Mega Evolutions were added in generation VI, Steelix received a new form that put its new weight up to 1,631.4 lbs. (740.0 kg). Players can evolve their Steelix into Mega Steelix by using the Steelixite item.

16 Altered Forme Giratina — 1653.5 lbs (750.0 kg)

Giratina, the box legendary of Pokemon Platinum, comes in two flavors. The special flavor is Origin Forme, where Giratina loses its legs and over 200 lbs (90.7 kg). The Altered Forme, found in both Platinum and the original Diamond and Pearl, clocks in just enough to squeeze its way onto the list.

Interestingly, although Altered Forme Giratina weighs more, Origin Forme is taller in height. Additionally, for anyone that has seen some of the leaked beta designs of Gen IV Pokemon, Giratina certainly looks... different. Hard to tell if it would've shared the same weight if they had stuck with its original design.

15 Crowned Shield Zamazenta — 1730.6 lbs (785.0 kg)

Zamazenta, the box legendary of Pokemon Shield version, isn't that heavy as just a wolf. Its sibling, Zacian, is also around half of Zamazenta's base weight. However, nobody cared who Zamazenta was before it put on the mask (and shield).

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With this sturdy steel shield, Zamazenta gains just under 1300 lbs (589.67 kg). The shield it carries is apparently heavier than many legendary Pokemon. The shield alone is heavier than Crowned Sword Zacian, which is absolutely insane. It's a miracle that Zamazenta is able to carry metal that dense, but perhaps it's a well-balanced shield. That leaves a question of just how strong Hop/the player is for carrying its rusted form.

14 Melmetal — 1763.7 lbs (800.0 kg)

If you're one of the many people who are still watching the Pokemon anime, you may recognize this mythical Steel-type Pokemon. We are, of course, referring to Melmetal, one of the heaviest Pokemon in existence. As part of Ash's team, Meltan combined with another to form a Melmetal during the Manalo Conference finals!

At a whopping 1763.7 lbs (800 kg), Melmetal has a body that is made mostly of liquid metal. Its hexagonal nuts keep it from falling apart. At the end of its life, Melmetal falls apart and reverts into Meltan.

13 Glastrier — 1763.7 lbs (800.0 kg)

Pokemon Sword and Shield Glastrier

Glastrier was one of the new legendary Pokemon added with the release of The Crown Tundra DLC and is a rather awesome Ice-type horse. It doesn't evolve into any other form, however, it can fuse with Calyrex, which we'll get into next.

Glastrier is pretty weighty, not that it compares to Mudslade when considering the weight of other horse Pokemon, but it does weigh 1763.7 lbs. (800.0 kg), which makes it one of the heaviest Pokemon to date and heavier than its Crown Tundra counterpart Spectrier.

12 Ice Rider Calyrex — 1783.8 lbs (809.1 kg)

Pokemon Sword and Shield Ice Rider Calyrex

Calyrex is one of the latest Legendary Pokemon to be added as it debuted with the release of The Crown Tundra DLC for Sword and Shield. This Psychic/Grass Pokemon doesn't evolve, but it does have two additional forms.

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When players use the  Reins of Unity on Calyrex and either Glastrier or Spectrier, it fuses the two Pokemon together and they become either Ice Rider Calyrex or Shadow Rider Calyrex until the fusion is finished. Ice Rider Calyrex weighs a whopping 1783.8 lbs. (809.1 kg).

11 Stakataka — 1807.8 lbs (820.0 kg)

This Ultra Beast is recognized by the code name UB Assembly, but it is better known by its name Stakataka. As its name implies, Stakataka consists of stacks of grey stone. The grey stones that Stakataka is made up of are life forms with glowing blue eyes. These eyes can change color when the Pokemon is startled or in a battle.

Stakataka is the heaviest Rock-type Pokemon that we've discovered thus far. It has a tremendous weight of 1807.8 lbs (820.0 kg), which is not surprising considering its colossal size.

10 Guzzlord —1957.7 lbs (888.0 kg)

This Pokemon guzzles almost anything in sight. There are reports of Guzzlord swallowing mountains whole. Interestingly enough, Guzzlord is the heaviest Dark-type in existence, and one of the most massive Dragon-type Pokémon.

In appearance, Guzzlord can be quite frightening. As a Pokemon that weighs 1957.7 lbs (888.0 kg), it has a long tongue that moves in a waving motion to suck up food. Even with its enormous appetite, no one has ever found droppings left from a Guzzlord.

9 Mudsdale —2028.3 lbs (920.0 kg)

First introduced in Generation VII of the Pokemon main series game, Mudsdale evolves from a Mudbray at level 30. This Pokemon may not seem as weighty as other Pokemon on this list, but given its size, heavy eyelids, and legs, its weight is accurate.

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Mudsdale weighs 2028.3 lbs (920.0 kg), making it one of the heaviest Pokemon in existence. The tail resembles dreadlocks, but it is missing black notches. This Pokemon displays a great deal of resilience in the face of a heated battle.

8 Mega Metagross — 2078.7 lbs (942.9 kg)

Despite having an animalistic appearance that is reminiscent of a crab, Mega Metagross is highly intelligent that is on par with a supercomputer. Its multiple brains allow it to perform advanced calculations.

According to Mega Meatagross's Pokedex entry, "When it knows it can't win, it digs the claws on its legs into its opponent and starts the countdown to a big explosion." When mega-evolving into a Mega Metagross, its weight nearly doubles. Mega Metagross has a weight of 2078.7 lbs (942.9 kg).

7 Groudon — 2,094 lbs (950.0 kg)

Groudon first appeared in Pokemon Ruby and has been a formidable Pokemon since then. Many of us know Groudon for its ongoing conflict with Kyogre. Groudon is said to lay asleep in a volcano, waiting for its next fight with Kyogre.

According to Groudon's Pokemon Omega Ruby Pokedex entry, "Groudon is said to be the personification of the land itself. Legends tell of its many clashes against Kyogre, as each sought to gain the power of nature." This gigantic Pokemon has a weight of 2,094 lbs (950 kg).

6 Eternatus — 2094.4 lbs (950.0 kg)

Introduced in Pokemon Sword and Shield, Eternatus plays a part in the two games' stories. Its enormous size categorizes it as the tallest Pokemon we've encountered thus far. As an Eternatus, it has a heavy weight of 2094.4 lbs (950.0 kg), but when it changes forms, it may become the heaviest Pokemon in existence.

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We don't know for sure since witnessing Eternatus's alternate form is a rare occurrence. Its weight hasn't been measured as an Eternamax Eternatus, so its alternative weight is a question mark.

5 Primal Groudon —2204.0 lbs (999.7 kg)

As the mascot of Pokemon Omega Ruby, Primal Groudon is larger than its regular counterpart. Primal Groudon what's known as the "Continent Pokemon." With the ability to raise and destroy lands in an instant, Primal Groudon is not only one of the heaviest, but one of the most powerful Pokémon so far.

Weighing at a massive 2204.0 lbs (999.7 kg), Primal Groudon has no known evolutionary form. It is a dual-type Fire-type and Ground-type. Like many Pokemon with high weights, Primal Groudon has stats in Defense.

4 Cosmoem — 2204.4 lbs (999.9 kg)

Starting as a lightweight Cosmog, Cosmoem becomes one of the heaviest Pokemon. Cosmoem is one of few Pokemon which loses weight when it evolves. This Pokemon evolves into Solgaelo or Lunala, depending on if you purchased Pokemon Sun, Ultra Sun, Moon, or Ultra Moon.

Weighing 2204.4 lbs (999.9 kg), it takes on the form of a blue orb with the cosmos pictured around its center. It is, without a doubt, the densest Pokemon, given its small size. Cosmoem cannot move and cannot eat. The Alolan people praise this Pokemon for being a gift from the high heavens.

3 Celesteela — 2204.4 lbs (999.9 kg)

Celesteela is a dual-type Steel and Flying-type Pokemon. Resembling a space shuttle and a bamboo shoot, Celesteela is one of the Ultra Beasts of Pokemon. It has no gender, but it can hatch from an egg. Celesteela first appeared in Generation VII of the Pokemon main series.

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As a Pokemon that resembles a space shuttle and can take off into outer space, it is regarded as the most massive Pokemon in existence. It weighs 2204.4 lbs (999.9 kg). Differing from other Ultra Beasts in the Pokemon anime, Celestela was growing in Alola for over 200 years. Upon being dug out of the ground by Sophocles and classmates, it flew into outer space.

2 Heavy Metal Copperajah — 2866.0 lbs (1330.0 kg)

Celesteela is literally a rocket-ship made of metal from an alternate realm. Cosmoem is absurdly dense like the stars it hails from. And yet, neither of these Pokemon can compete with the sheer magnitude of the giant steel elephant with its Hidden Ability.

Heavy Metal doubles the weight of a normal Copperajah to an astronomically high level, shooting it above (almost) all of the competition. It's no surprise that Copperajah is able to pick up most of the weight-based attacks; it can use them all incredibly effectively. Copperajah may look heavy, but it's even heavier than it may initially seem.

1 MissingNo. — 3507.2 lbs (1590.8 kg)

While regular Pokemon may clock in at a "reasonable" weight, glitched Pokemon do not obey the laws of man. MissingNo., one of many famous glitched Pokemon in Red and Blue, actually has a height and weight on its stat screen. It is 10 ft. (3.04m) tall and weighs an absurd amount. It has a different weight in the original Japanese release, only at 22 lbs (10 kg).

And yet, it isn't even the heaviest glitched Pokemon. That belongs to h POKé, which is essentially a glitched Gengar. It is apparently 80 ft. (24.5m) tall and weighs 6099.9 lbs (2766.5 kg). These are proportions of Gigantamax Pokemon. However, two glitched Pokemon at the top of the list doesn't seem fair, so it's just fun to mention them. Maybe someday, Game Freak will add legit Pokemon that are the scale of these two classic glitches.

NEXT: The 10 Best Steel Pokémon Designs & Looks, Ranked

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