Taash's romance questline in Dragon Age: The Veilguard is truly unique. As you get to know the towering dragon hunter, you also follow them on a journey in exploring their identity. I don't think there's another character in all of RPGs that decides to change their gender expression during your relationship, let alone in previous Dragon Age games.
I can't say that it's always the most masterfully written storyline—much of Taash's self-reflection is quite awkwardly inserted into conversations...