Daeron Targaryen is a Targaryen prince tied to the Green side of the Dance of the Dragons, and Season 3 Episode 3 appears to use him as a significant twist/reveal in the power struggle around the Iron Throne.

Who he is

Daeron is presented as part of the royal Targaryen family and connected to Team Green’s political and military plans, which is why his name matters in the episode’s ending setup. Coverage from multiple outlets frames the episode as finally bringing Daeron into sharper focus for viewers who may have heard of him from the broader Fire & Blood story but not fully seen his role on- screen yet.

Why people are talking about him

The big reason is that Episode 3 seems to turn Daeron from a background-name into a real piece of the board, with recaps and explainers treating his reveal as a plot twist that changes what comes next in the war. In other words, he is important because he helps shift the conflict from simple battlefield momentum into a more complicated dynastic and political threat.

In plain English

If you just want the quick scoop: Daeron Targaryen is one of the Targaryens on the Green side, and S03E03 is the episode where the show makes him feel like a real factor instead of a name fans were waiting for.

TL;DR

Daeron is a Targaryen prince, aligned with the Greens, and Episode 3’s ending is where the show spotlights him as a major player in the war ahead.