Over the last nine generations of the Pokemon franchise, series developer Game Freak has continued to grow the series with new gameplay mechanics. New interpretations of traditional Pokemon mechanics, such as the powerful Mega Evolutions introduced in the Pokemon X and Y games, are examples of this. Alongside new Pokemon and gameplay, several new types, such as the Fairy typing, have been introduced over the years.

On occasion, Game Freak also has dabbled in introducing extraterrestrial Pokemon to the franchise. While not a distinct type of Pokemon, fans often associate them with each other due to their alien-like qualities. Many alien Pokemon are among the strongest in the series, with powerful stats.

Pokemon featured image with Skarmory and Metagross
The 19 Best Pokemon To Use As Tanks

Some Pokemon are much more defensive than others. Here's a look at a handful that make great tanks.

1

5 Deoxys

Stat Spread Varies Based On Forme

Normal Forme

Attack Forme

Defense Forme

Speed Forme

HP

50

50

50

50

Attack

150

180

70

95

Defense

50

20

160

90

Sp. Atk.

150

180

70

95

Sp. Def.

50

20

160

90

Speed

150

150

90

180

Total

600

600

600

600

  • Type: Psychic
  • Introduced In: Generation 3

Deoxys, the DNA Pokemon, is said to come from outer space as an alien virus, mutating into its current form after crashing into the Pokemon world via a meteorite. A rival of the powerful Rayquaza, Deoxys is one of the rarest Pokemon. It is known to hold its own against the most powerful Pocket Monsters due to its ability to transform into different forms.

The powerful mythical Pokemon can adopt a speed, defense, attack, and normal form. Each of the forms changes Deoxys' stats as seen in the table above. For example, the Speed Forme gives Deoxys a base stat of 180 speed, while its Attack Forme elevates its stats to a staggering 180 across both normal and special attacks. Across each of its forms, its stats equal 600, equivalent to a pseudo-legendary.

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While Deoxys does not come top of the class in most of these stats, it is within the top ten Pokemon for each stat type. It is also the fastest Pokemon in the series when in its Speed Forme, beating the speedy Pheromosa to the top. It also has the highest Special Attack and Special Defense stats of any alien Pokemon.

4 Kartana

Highest Attack Stat Of All Alien Pokemon

HP

59

Attack

181

Defense

131

Sp. Atk.

59

Sp. Def.

31

Speed

109

Total

570

  • Type: Grass/Steel
  • Introduced In: Generation 7

Kartana, the Drawn Sword Pokemon, is a strong Ultra Beast that resembles a katana sword. Known for its ability to cut through steel, t he Pokemon has the highest offensive attack stat of extraterrestrial life on this list. Kartana has an attack of 181, placing it third after Mega Heracross and Mega Mewtwo X. The ultra beast is known to come from another world in space known as the ultra forest, traveling to the Pokemon world via an ultra wormhole.

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4

Kartana can learn powerful moves such as Sacred Sword and Leaf Blade due to its Grass/Steel typing. While not the most well-rounded on this list, with weak defense and health, Kartana is a formidable opponent that outmatches all others in terms of pure attack power.

3 Stakataka

A Defensive Wall Among Alien Pokemon

HP

61

Attack

131

Defense

211

Sp. Atk.

53

Sp. Def.

101

Speed

13

Total

570

  • Type: Rock/Steel
  • Introduced In: Generation 7

The extraterrestrial with the highest defense, Stakataka is another Ultra Beast. Like Kartana, Stakataka is said to have come from another dimension in space through what is known as an ultra wormhole, which acts as a portal connecting the Pokemon world with ultra space.

This Pokemon has a base defense stat of 211, making it the second-highest defensive Pokemon after Mega Steelix, Aggron, and the adorable Shuckle, which are all tied at 230. Nevertheless, Stakataka's defense, half-decent attack, and dual rock/steel typing make it a valuable asset for players.

2 Giratina

A Demonic Pokemon From Another Dimension

Pokémon Diamond
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As a rookie Pokémon Trainer, you will need to catch, train. And battle Pokémon on your journey to become the Pokémon League Champion. You will face many challenges along the way, as you search for the Pokémon that rules space in Pokemon Diamond Version.
- Discover more than 100 new Pokémon in the Sinnoh Region!
- Meet goals and earn the ability to import Pokémon from your GBA versions!
- Battle and trade with your friends around the world using Nintendo Wi-Fi Connection!
     - Compatible wireless router or Nintendo Wi-Fi USB Connector and broadband access may  be required for online play.
- Watch as day turns to night with the return of the real-time clock feature!

Released
April 22, 2007
Developer(s)
Game Freak
Publisher(s)
Nintendo
Platform(s)
Nintendo DS
Genre(s)
RPG

Origin Forme

Altered Forme

HP

150

150

Attack

120

100

Defense

100

120

Sp. Atk.

120

100

Sp. Def.

100

120

Speed

90

90

Total

680

680

  • Type: Ghost/Dragon
  • Introduced In: Generation 4

This one may be a contentious pick for an alien Pokemon. But according to Pokemon lore, Giratina, as well as its deity counterparts, Dialga, Palkia, and Arceus, are all from different dimensions within the Pokemon universe. Giratina lives in the Distortion World, a 'distorted' inverse version of the Pokemon world that does not abide by the laws of gravity.

Giratina is a demon-like pocket monster that Arceus exiled to the Distortion World. Players can encounter Giratina in normal and distorted forms, and it is one of the strongest Pokemon in the Gen 4 games. The banished Pokemon has a health stat of 150 in both its normal and distortion form variants, the greatest of all alien Pokemon.

1 Eternatus

The Best All-Around Stats Of Any Alien Pokemon

Pokemon Sword and Shield
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Released
November 15, 2019
Developer(s)
Game Freak
Publisher(s)
Nintendo
Platform(s)
Switch
Genre(s)
RPG

Regular Form

Eternamax Form

HP

140

255

Attack

85

115

Defense

95

250

Sp. Atk.

145

125

Sp. Def.

95

250

Speed

130

130

Total

690

1125

  • Type: Poison/Dragon
  • Introduced In: Generation 8

Eternatus is the strongest alien Pokemon of all time, with an impressive 690 combined stat total that rivals legends like Dialga and Palkia. According to Pokemon lore, Eternatus came from space on a meteorite, landing in the region of Galar 20,000 years before the events of Pokemon Sword and Shield.

Eternatus can increase its power further by transforming into its original form, Eternamax Eternatus. During the Pokemon Sword and Shield games, players must face off against Eternamax Eternatus as the title's final boss. Eternamax Eternatus is stronger than its lesser form, with an unbelievable 1125 total stat count. This is the highest of any Pokemon, including the Pokemon god Arceus.