This is so incredibly stupid
Nabu is a comedy character and not a real character. And for comedies everything has to stereotyped and exaggerated (cause otherwise the audience wouldnt have the common values for the base of the jokes).
Theres this scotish stereotype Willy. Anyone ever whined about him? No. And theres an obvious reason for that: No mentally stable and thinking person ever will think that all scotish people are like Willy (like noone thinks that Apu stands for all indians). Thinking in any different way is simply incredible stupid!
So, dear Hari Kondabolu: Get a brain!
And BTW: You are damaging the appearance of indians in public way more then Apu ever could. Cause you dont even know what the difference between comedy and reality is! And why are you usin Apu even on the movie posters when you think that he is a problem? So you are just a whining gloryhunter then?