"The D&D game system is flexible, but it’s also meant to be a balanced
set of rules."
Its fun to see the word "balanced" in 3.5.
There are some totally OP class combinations ( most of them make no sense RP wise ) while it is very easy to make a totally useless char.
I played NWN2 and its amazing what you see when looking at the build maker.
I also read something about a PnP build contest were the winner was a gargantuan monstrosity with many classes, sorry I do not remember details but I think it had also many arms.
Well, you could role play this as " I am a (monster race x) on an epic quest to become a demon lord."

Prof. Dr. Dr. Mad S. Tist

World leading expert of artificial stupidity.
Because there are too many people who work on artificial intelligence already