Forgotten Archetypes: Alien, an Archetype from another world

ORIGINS AND COMMON ELEMENTS
Alien are based on aliens, those aliens from the science fiction books, those who (possibly) fly above our heads in UFO's.
Aliens are all Reptile-type, and their members are of all Attributes.

PLAY STYLE
"Alien decks focus heavily on exploiting "A-Counters", which weaken opposing monsters battling against "Aliens" and permit "Alien" users to activate a variety of specific theft, revival, and destruction effects."
This discription is from the Wikia and it says it all. Alien monsters and support generate A-Counters, which are used to control and destroy your opponent's monsters or summon your own monsters.

Alien support have 2 very specific objectives: generate counters and take control of your opponent's monsters. Yes, just like Mind Control, Enemy Control and things like that.

Most Alien monsters also have a specific text on them, which I will call the "Alien Power" in the guide: (If a monster with an A-Counter battles an "Alien" monster, it loses 300 ATK and DEF for each A-Counter during damage calculation only.), which is very handy to make strong monster fall victim to the mostly weak Aliens. But attention, this effect affects every battle, so the amount of ATK your opponent's monsters lose is the number of monsters with ability X the number of counters on monster X 300. Which can be a really big lost to the monster.

SETS
Alien have been around since the GX era, but new support has arise in the Synchro era:

• Power of the Duelist - 10 cards
  
• Cyberdark Impact - 3 cards
  
• Strike of Neos - 2 cards
  
• Force of the Breaker - 3 cards
  
• Tactical Evolution - 1 card
  
• Gladiator's Assault - 6 cards
  
• Light of Destruction - 1 card
  
• Crimsom Crisis - 7 cards
  
• Raging Battle - 1 card
  
• Absolute Powerforce - 1 card

THE CARDS OF THE ARCHETYPE

Monsters --- 19

Spoiler:

Spells --- 7

Spoiler:

Traps --- 9

Spoiler:

OTHER CARDS TO USE
You now know this guys, so here are more support for them.
As Aliens are Reptiles, many of their support can be used:

Spoiler:

STRATEGIES

Control your opponent's monsters
This strategy focus on control your opponent's monsters and turn them agianst their master. I never tried it actually.

Beatdown Aliens
This focus on getting Gol'gar on the field and control the field using A-Counters, etc.
EXAMPLE LIST (this is my deck):

• Alien Ammonite x3
  
• Alien Dog x2
  
• Alien Grey x2
  
• Alien Kid x 1
  
• Alien Overlord x 2
  
• Alien Telepath x2
  
• Alien Warrior x 3
  
• Lion Alligator x1
  
• Oshaleon x 2
  
• "A" Cell Incubator x1
  
• "A" Cell Scatter Burst x2
  
• Code A Ancient Ruins x3
  
• Dark Hole
  
• Monster Reborn
  
• Mysterious Triangle x 2
  
• Solidarity x 2
  
• Swords
  
• Viper's Rebirth x 1
  
• Alien Brain x 1
  
• Bottomless Trap Hole / Solemn Warning x 1
  
• Mirror Force
  
• Offerings to the Snake Deity x 2
  
• Planet Pollutant Virus x1
  
• Solemn Judgement
  Cosmic Fortress Gol'gar and Generic Synchros

PERFECT PLAYS AND COMBINATIONS

[In contruction]

PROS AND CONS

PROS:

• You can easily control the field using the destruction abilitys of the Aliens.
  
• Gol'gar is an extremely powerful monster and easy to summon.
  
• Completly ruins any stall deck with Gol'gar.
  
• Your opponent will not expect this deck at all.

CONS:

• Interestingly, the few A-Counters they generate (yes, few) aren't usually used to destroy cards your opponent controls, except with Gol'gar.
  
• Lack of better monsters - We need more Level 4's with best effects.
  
• You can't put counters on face-down monsters...
  
• Gravekeeper's, Gozen Match and Book of Moon kill this deck.
  
• Although they have TONS of support, most of it is useless. Missing a decent draw card and a decent searcher.