Granero : Bohemio
Cristiano Ronaldo : Maquina (Machine)
Adebayor : Avatar Y Adenabor
Di Maria : Angelito
Iker Casillas : Capitan (Captain)
Arbeloa : Robocop
Carvalho : Abuelo
Pedro León : Tomate
Xabi Alonso : Senor
Marcelo : Loco (Crazy)
Canales : Niño
Benzema : Monsieur
For CR, Casillas often called him "machine" since it suitable with his ambitious, powerfull, strength, and eager to win in every matches.
Carvalho called Abuelo or grandpa for his age (32yrs is old in football world) and his seriousness.
Arbeloa nickname 'Robocop' is because he spends most of his time in the gym.
Gago names Bohemian, since he's quiet nature and his taste for retro
And okay, here's the weird one. Ozil being called Nemo because the team thought that he has a resemble to the clown fish Nemo from Disney character.
There are nicknames for every players, but other just missed here. Anyway, it's just for fun among the players....