Alright, so there’s been loads of speculation on who Amon is yadda yadda yadda. I’ve heard things from the cabbage merchant to Fire Lord Ozai. It just occurred to me, based on another theory, what if Amon is Ursa’s grandson? Maybe after Ursa was banished she grew to resent benders, because of how the Fire Nation abused their power. She eventually remarried, even had other kids, and passed on this resentment of benders. One of the kids had a child and BOOM, we have Amon.
I was thinking that Ursa might’ve left the Fire Nation pregnant with her and Ozai’s third child, and Amon was her (great) grand son through that.