Final Fantasy XII Esper list, guide

I wold like to know the Esper in Final Fantasy XII how many are there where can i find them , can any one post a full guide on them please , thanks

The Espers in Final Fantasy XII are powerful beings created by the gods themselves. However, the Espers that join the player's side are those spurned by their creators; twelve for having rebelled, and a thirteenth for being too powerful. Most of the Espers were based on the Lucavi in Final Fantasy Tactics or other past bosses of previous Final Fantasy games. Some appeared as Totema in Final Fantasy Tactics Advance, and all reappeared in Final Fantasy Tactics A2: Grimoire of the Rift.

There are a total of 13 espers in the world of Final Fantasy XII.

• Adrammelech
  This Lightning-based Esper also has the ability to heal Summoner with Curaja. His permanent Faith status ensures that all of his spells are enhanced and his ability to ignore Reflect makes him very powerful if you can aquire him early on, but his relatively low stats mean that if you wait too long to get him, he will be virtually useless.
  
• Belias
• Chaos
• Cuchulainn
• Exodus
• Famfrit
• Hashmal
• Mateus
• Shemhazai
• Ultima
• Zalera
• Zeromus
• Zodiark

To get the full details about this Espers see here