The Guy above me is a troll because...

[Last of the Chinchillas]

...for counting ability.

 

[Azraellod]

...for being green.

 

[XJ-0461]

...for being yellow.

 

[Last of the Chinchillas]

...for being made of meat-like stuff.

 

[Sven und EIN HUND]

For everything in his avatar being black except the inlays on the fretboard and other minor details, including the fact that the guy is white.

Edit: grrrr, beat me to it.... Um, for resembling a mouse frankenstein.

 

[XJ-0461]

...for coming back here.

 

[XJ-0461]

...for being very sinister.

 

[XJ-0461]

...for suggesting that I should be more like him.

 

[XJ-0461]

...for having that ghastly smile.

 

[XJ-0461]

...for criticising how I constructed my post.

 

[XJ-0461]

...for being in a relationship.

 

[XJ-0461]

...for also having a PS3.

EDIT: Curses! Ninja'd!