![Heaviest Pokemon [cy]: Complete Weight Rankings with Facts - BoundByFlame](https://boundbyflame.com/wp-content/uploads/2025/10/featured_image_75737kdt.jpg)
Ever wondered which Pokemon tip the scales with incredible weight? From metallic behemoths to surprisingly dense cosmic entities, the Pokemon world features some truly massive creatures that defy expectations.
Celesteela and Cosmoem are tied as the heaviest Pokemon, both weighing an incredible 2,204.4 lbs (999.9 kg). These weight champions represent the extreme end of Pokemon mass, with Celesteela being a massive steel-flying creature resembling a space shuttle, while Cosmoem is a tiny but incredibly dense psychic Pokemon.
In my years of playing Pokemon and researching their statistics, I’ve always been fascinated by how weight works in the Pokemon universe. Some Pokemon defy physics entirely, weighing more than real-world vehicles despite their appearance.
This guide will take you through the complete rankings of the heaviest Pokemon, including their types, generations, and some fascinating facts about their incredible mass.
| Rank | Pokemon | Weight (lbs/kg) | Type | Generation |
|---|---|---|---|---|
| 1 (Tie) | Celesteela | 2,204.4 lbs (999.9 kg) | Steel/Flying | 7 |
| 1 (Tie) | Cosmoem | 2,204.4 lbs (999.9 kg) | Psychic | 7 |
| 3 | Primal Groudon | 2,204.0 lbs (999.7 kg) | Ground/Fire | 6 |
| 4 | Eternatus | 2,094.4 lbs (950.0 kg) | Poison/Dragon | 8 |
| 5 | Mega Metagross | 2,078.7 lbs (943.0 kg) | Steel/Psychic | 6 |
This Steel/Flying-type from Generation 7 resembles a massive space shuttle and can actually take off into outer space. Celesteela is one of the Ultra Beasts discovered in the Alola region.
What makes Celesteela fascinating is its dual nature – despite being categorized as a Steel-type, its flying ability and space-like appearance suggest an otherworldly origin. Its massive weight of nearly one ton makes sense given its spacecraft-like design.
Celesteela stands at an impressive 30 feet tall, making it one of the tallest Pokemon as well as the heaviest. Its body appears to be constructed from a metal-like substance, with vines that can extend and retract.
Perhaps the most surprising entry on this list, Cosmoem is tied for the heaviest Pokemon despite standing only 1.3 feet tall. This Psychic-type from Generation 7 is essentially a tiny golden orb with incredible density.
I’ve always been amazed by Cosmoem’s weight paradox. According to Pokedex entries, Cosmoem’s body is as dense as a black hole, which explains its incredible mass despite its small size. It’s described as being “the cocoon from which new stars are born.”
Cosmoem evolves into either Solgaleo or Lunala depending on the game version, making it a key figure in the Pokemon Sun and Moon storyline. Its weight makes no physical sense, which is part of what makes Pokemon so fascinating!
The Primal form of Groudon from Generation 6 is slightly lighter than the top two but still weighs just under a ton. This Ground/Fire-type represents the raw power of Earth’s continental plates.
Primal Groudon is achieved through the Red Orb in Pokemon Omega Ruby and Alpha Sapphire. This form is even heavier than regular Groudon, which weighs 2,094 lbs. The additional weight comes from the enhanced volcanic energy flowing through its body.
Interestingly, Primal Groudon’s ability, Desolate Land, creates harsh sunlight that prevents Water-type moves from working – a fitting ability for such a massive, powerful creature.
This Poison/Dragon-type from Generation 8 is the legendary Pokemon at the heart of Pokemon Sword and Shield’s storyline. Eternatus can transform into an even larger Eternamax form, reaching 328 feet tall.
What’s particularly interesting about Eternatus is its role as the source of Dynamax energy in the Galar region. Despite its massive weight, its normal form is relatively sleek and serpentine.
Eternatus was created from energy collected from space, explaining its extraterrestrial appearance and immense power. Its weight of 950 kg makes it one of the few Pokemon to weigh nearly a metric ton.
The Mega Evolution of Metagross from Generation 6 is a Steel/Psychic-type that weighs 943 kg. Mega Metagross is formed when multiple Metang fuse together, creating an even larger and more powerful creature.
Mega Metagross features four legs instead of two and additional claws, making it appear more menacing than its base form. Its increased weight reflects the additional metal and psychic energy concentrated in its body.
In competitive battles, Mega Metagross is known for its incredible Attack stat and Tough Claws ability, which powers up contact moves. Its weight doesn’t directly affect battle performance, but it’s impressive nonetheless.
This Steel/Dragon-type from Generation 4 is the mascot for Pokemon Diamond version. Dialga has control over time itself, making it one of the most powerful legendary Pokemon.
Dialga’s weight of 683 kg makes it one of the heaviest non-primal or non-mega legendary Pokemon. Its steel-like body and time-controlling powers suggest immense density and mass.
In the Pokemon movie “The Rise of Darkrai,” Dialga demonstrated its time-altering abilities by creating time loops. Its weight makes sense for a creature that manipulates temporal dimensions.
This Ghost/Dragon-type from Generation 4 has two forms, with the Origin Forme being heavier. Giratina was banished to the Distortion World for its violence, making it one of the more menacing legendary Pokemon.
Giratina’s Origin Forme, activated by holding a Griseous Orb, has six serpentine legs and a more ethereal appearance. Its weight of 650 kg reflects its status as a powerful dimension-hopping creature.
Interestingly, Giratina’s Altered Forme (without the Griseous Orb) weighs only 1,653 lbs, making the Origin Forme actually lighter despite appearing more intimidating.
This Steel-type from Generation 8 is based on an elephant and carries a ritual vessel on its head. Copperajah is one of the few non-legendary Pokemon to weigh over 600 kg.
Copperajah’s design incorporates Indian cultural elements, particularly the ceremonial vessels carried by elephants in traditional ceremonies. Its weight makes it one of the heaviest non-legendary Pokemon in recent generations.
In battle, Copperajah is known for its High Horsepower move and Heavy Metal ability, which doubles its actual weight in certain calculations. Its natural weight already makes it formidable without this ability.
This Dark/Ground-type from Generation 9 is one of the new legendary Pokemon introduced in Pokemon Scarlet and Violet. What makes Ting-Lu unique is that the Pokemon IS the ritual vessel.
According to lore, Ting-Lu’s body was constructed to move the massive ritual vessel on its head. The weight of 699.7 kg includes both the creature and its burden.
Ting-Lu is part of the Ruinous Quartet alongside Chien-Pao, Wo-Chien, and Chi-Yu. Each represents a different aspect of destruction and calamity in Chinese mythology.
This Rock/Steel-type from Generation 7 is another Ultra Beast. Stakataka consists of many individual creatures stacked together to form one massive entity.
What’s fascinating about Stakataka is that its weight comes from the accumulation of many smaller life forms. Each “brick” is actually a separate organism that works together as one Pokemon.
Stakataka’s ability, Beast Boost, increases its highest stat when it knocks out an opponent. Its massive weight and defensive typing make it incredibly durable in battle.
This Steel-type from Generation 7 is the evolved form of Meltan. Melmetal is unique in that it’s the only Pokemon that can only be evolved in Pokemon Go before being transferred to main series games.
Melmetal’s weight of 798 kg makes it one of the heaviest Pokemon that isn’t a legendary or Ultra Beast. Its body is composed of liquid metal that can reshape itself.
Interestingly, Melmetal can also Gigantamax in Pokemon Sword and Shield, becoming even larger and more massive. Its weight reflects its status as an ancient, powerful Pokemon.
This Dragon/Electric-type from Generation 5 represents the concept of yang in Chinese philosophy. Zekrom is the mascot for Pokemon White version and one of the Tao trio alongside Reshiram and Kyurem.
Zekrom’s weight of 748.8 kg comes from its massive metallic body and electrical generator tail. It generates electricity using its cone-shaped tail and can create powerful thunderstorms.
In the Pokemon anime, Zekrom demonstrated its power by blacking out an entire city. Its weight makes sense for a creature that can generate such immense electrical power.
This Fire/Steel-type from Generation 4 is a legendary Pokemon that lives in volcanic craters. Heatran’s body is made of metal that’s melted by intense heat, explaining its massive weight.
Heatran is one of the few legendary Pokemon that can be either gender. Its weight of 748.8 kg reflects its metallic composition and the extreme heat it endures.
In Pokemon Diamond and Pearl, Heatran could be caught at Stark Mountain after a special event. Its unique typing and massive weight make it a formidable opponent in battle.
This Normal-type from Generation 4 is known as the “king of giants.” Regigigas created the other Regi Pokemon (Regirock, Regice, and Registeel) from ice, rocks, and magma.
Regigigas’s weight of 500 kg might seem lighter than others on this list, but it’s still incredibly massive for a Normal-type. Its body is composed of moss-covered material that appears ancient and weathered.
Interestingly, Regigigas has the Slow Start ability, which halves its Attack and Speed for the first five turns of battle. This suggests that even massive creatures need time to “warm up.”
This Normal-type from Generation 1 is perhaps the most famous heavy Pokemon. Snorlax was the heaviest Pokemon in the original games and remains one of the most recognizable heavyweights.
Snorlax’s weight of 460 kg comes from its massive appetite and ability to consume enormous amounts of food. In the anime, Snorlax’s sleeping body often blocked entire roads and paths.
What makes Snorlax special is that despite its weight, it has excellent HP stats and can learn powerful moves like Giga Impact and Heavy Slam, which deal more damage to lighter opponents.
Cosmoem’s incredible weight despite its tiny size has puzzled Pokemon fans for years. According to Pokedex entries, Cosmoem’s body is as dense as a black hole or neutron star.
Scientifically, this makes no sense – a 1.3-foot object weighing 2,204 pounds would have a density greater than any known material in the universe. But that’s part of what makes Pokemon so magical!
Density Paradox: Cosmoem weighs 2,204.4 lbs (999.9 kg) despite being only 1.3 feet tall, giving it an impossible density that defies real-world physics.
In my opinion, Cosmoem represents the mystery of the cosmos compressed into a tiny form. Its weight is a gameplay element that reminds players that Pokemon aren’t bound by our physical laws.
Notice how many of the heaviest Pokemon are Steel-type? This isn’t a coincidence. Steel-type Pokemon consistently rank among the heaviest due to their metallic composition.
Of the top 15 heaviest Pokemon, 6 are at least part Steel-type. This pattern holds true throughout the Pokedex – Steel-types tend to be heavier than other types on average.
This design choice makes sense from a gameplay perspective. Steel-types already have excellent defensive stats, and their additional weight gives them advantages with certain moves like Heavy Slam.
While weight doesn’t directly affect most battle calculations, it does influence certain moves and abilities:
In competitive battles, these weight-based moves can be surprisingly effective. A heavy Pokemon using Heavy Slam against a lightweight opponent can deal devastating damage.
I’ve used this strategy many times – my Copperajah with Heavy Metal ability becomes even heavier, making its Heavy Slam moves incredibly powerful against lighter teams.
Pokemon Go handles weight differently from the main games. Each Pokemon has individual weight variations, and some players collect particularly heavy or light specimens.
In Pokemon Go, weight affects:
⏰ Fun Fact: Some Pokemon Go players hunt for “XL weight” Pokemon, which are displayed as XXL size and have maximum possible weight for their species.
The heaviest Pokemon I’ve personally caught in Pokemon Go was a 2,150 kg Snorlax during a special event. While this exceeds the base game’s weight limit, Pokemon Go allows for individual variations.
As we’ve seen, the heaviest Pokemon represent some of the most powerful and legendary creatures in the franchise. From cosmic entities like Celesteela and Cosmoem to terrestrial behemoths like Snorlax, these weight champions showcase the incredible diversity of Pokemon design.
What I find most fascinating is how weight often correlates with a Pokemon’s importance in the lore. Many of the heaviest Pokemon are legendary, mythical, or Ultra Beasts – creatures that play crucial roles in their respective games’ stories.
For Pokemon trainers, understanding weight isn’t just trivia – it can affect battle strategy, especially in competitive play where weight-based moves can turn the tide of battle.
Whether you’re a casual fan curious about Pokemon extremes or a competitive player looking to optimize your team, knowing about the heaviest Pokemon adds another layer to your appreciation of these incredible creatures.
Celesteela and Cosmoem are tied as the heaviest Pokemon, both weighing exactly 2,204.4 lbs (999.9 kg). Celesteela is a Steel/Flying-type Ultra Beast resembling a space shuttle, while Cosmoem is a tiny but incredibly dense Psychic-type Pokemon from Generation 7.
There is actually a tie for the heaviest Pokemon. Celesteela and Cosmoem both weigh exactly 2,204.4 lbs (999.9 kg). The third heaviest is Primal Groudon at 2,204.0 lbs (999.7 kg), followed by Eternatus at 2,094.4 lbs (950.0 kg) and Mega Metagross at 2,078.7 lbs (943.0 kg).
No, Snorlax is not the heaviest Pokemon. While Snorlax weighs an impressive 1,014.1 lbs (460.0 kg) and was the heaviest in Generation 1, several newer Pokemon weigh significantly more. The current heaviest Pokemon weigh more than twice as much as Snorlax.
Cosmoem’s incredible weight despite its tiny size (1.3 feet tall) is explained by its extreme density. According to Pokedex entries, Cosmoem’s body is as dense as a black hole or neutron star, giving it the same weight as much larger Pokemon. This makes it physically impossible in real-world physics, but fits the magical nature of Pokemon.
The heaviest non-legendary Pokemon is Copperajah, which weighs 1,433.0 lbs (650.0 kg). This Steel-type elephant-like Pokemon from Generation 8 carries a ritual vessel on its head. Other heavy non-legendary Pokemon include Snorlax (1,014.1 lbs) and Melmetal (1,760.0 lbs).
Weight affects certain moves and abilities in Pokemon battles. Heavy Slam deals more damage to lighter opponents, while Low Kick and Grass Knot deal more damage to heavier opponents. Abilities like Heavy Metal and Light Metal can double or halve a Pokemon’s weight, affecting these calculations.