Originally Posted by QuantumIguana
I don't think the characters need to be like the narrator thinks of them. The narrator has an interpretation, but it is just an interpretation.
They have to be like the narrator thinks of them... or rather the narrator has to present them like he seem them. Unless you have multiple narrators, that means the views on all the characters will be skewed to what ever the narrator thinks. The reader will have read between the lines to find out if the narrator is right (you can not trust a first person narrator), but it still has to be presented from the point of view the book is written in.
Otherwise write in 3rd person.