She's Tessarion, known as the Blue Queen, a dragon ridden by Daeron Targaryen (Benjamin Evan Ainsworth) — though whether he's alive after the Battle of Tumbleton in the Season 3 finale remains to be seen. Sign up for Mashable's Top Stories newsletter Loading... Sign Me Up Use this instead By clicking Sign Me Up, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy Thanks for signing up! Unfortunately for the Blue Queen, she has to sit tight in the Tumbleton stables until we see her again in the Season 3 finale, when Daeron's peace plan fails and he decides that riding out into the bloody battle on his baby dragon is his only choice.