What's more tragic than one of Rhaenyra's beloved children being murdered? Two of Rhaenyra's beloved children being murdered.

Rhaenyra's firstborn son and heir, Prince Jacaerys Velaryon (Harry Collett), aka Jace, had always been eager to prove himself. He was passionate, clever, daring — yet constantly (and lovingly) restrained by his mother, who feared his youth and lack of experience would spell disaster in battle.

Sadly, Rhaenyra was right. In the season three premiere, Jace forcibly took his mother's place at the Battle of the Gullet, locking Rhaenyra in her room and flying off to his doom.

While Jace burned enemy ships on his dragon, Vermax, those enemies were plotting to take him down. Vermax was impaled from the sky and pulled to his watery grave, while Jace managed to survive by unclipping from his saddle — though his survival was all too brief. Jace was quickly shot by enemy arrows, and his corpse was left to float among countless other warriors.

Over two seasons, Jacaerys had become a surprisingly savvy diplomat and a fan-favorite character. It's devastating to know that he won't grace our screens again — and even more devastating to imagine how his death will affect Rhaenyra, who's already lost one son in her quest for the Iron Throne.