Oh Amar. Where shall we start?
Amar tend to be between 28 and 35 when the story takes place, depending on the AU.
There are a lot of AUs...
He is often a scholar, a noble, a man of science or magic, sometimes a man of religion. He gravitates towards power in pursuit of doing good, or rather, of doing better. He is analytical and keeps his cool on the surface but is by no means a cold person. He values the friends he do have dearly.
One of the main conflict with Amar is his determination to reach his goals, and what sacrifices that has to be made for it. To Amar there is nothing more important than his goal, and so he can be both a great asset to the main characters of the story, but also a great obstacle.