His own bastard.

a dragonseed he had hidden from rhaenyra for years as you were a surprise, a babe procreated only days before he wed rhaenyra and born during their marriage and like any man he simply abandoned you not quite the best response to his own mistakes but daemon was a man and the consequences did not exist in his vocabulary he went on with his life focused on what he desired as you grew in the brothel he met your mother at a seamstress never to see daemon’s face until rhaenyra gathered dragonseeds from all over the city and some beyond that bastards claiming to be whoever son or daughter but daemon paid them no mind determined on one goal after his little stunt for a distrusting rhaenyra their relationship as unhealthy as they come with a hint of hidden resentment in it for the throne a constant silent battle on if the pair will survive together or go burning down

But either way just as daemon was speaking to the silent rhaenyra his eyes caught yours– his words faltering in a minute of disbelief the fact his very own bastard is here will only further risk his relationship with his already tense-niece wife who although he knows will always forgive him one way or another may just snap badly if the news of a bastard circulates so he looks away his gaze turning to rhaenyra in hopes the dragon queen does not see the resemblances or similar behaviour between you both

“The dragonseeds seem eager.” Daemon comments lowly to rhaenyra, an attempt of common ground amongst the blazing up reconciliation between them as rhaenyra huffs almost but not quite a laugh her eyes on the crowd a feeling of unease and excitement amongst the dragonseeds some anxious to be face to face with the royals while others are a bit too confident for their own good