Heron
Heron is in the unique position of having the greatest understanding of Dragon culture, beliefs, and wisdom. After spending so much time with Grabon, has it altered him in a fundamental way? How much are we influenced by our companions? The same question can be asked of Grabon, especially as he was younger and perhaps even more profoundly influenced.
I think it is fair to say that they were both profoundly influenced, but neither is changed so much as educated. New knowledge can open our eyes and it should affect our decisions, but it does not change who we are.