El Mariachi is just jealous that he doesn't bring the intellect to perform good on this board.
In holland, everybody laughs at him because he proudly tells everyone about his lifts and his 'progress', and when somebody tells him he's fat he says "Dude, i'm curretly bulking!".
Dutch women won't even look at this fat midget, so he has a hate for the country that's given him a new home and cannot accept his 'new identity'.
He is very similar to the shadow. He isn't through puberty yet, and all self hatred and insecurity has to be pointed at others, mostly at those people he envies very much. He envies Kiwiol for his built and intellect, also his wealth and self esteem.
He tries to point stupid posts and threads to others and has a kind of satisfactional feeling when he 'ruins' something a person has accomplished that he is jealous of.
He also has the problem that his parents and his older sister are VERY bosnian and keep to their own kind, they cannot speak dutch very good. El Mariachis dutch is flawless though, but because of his descent he is not accepted by the dutch kids in his school.
He is a loner, not very intelligent and hopes he will find a job after school. He will always blame all his problems on racism though.