There's a pretty long list Game Of Thrones characters that were probably knocked off a bit prematurely.

One of those was (SPOILER ALERT) undoubtedly Khal Drogo, the hulking Dothraki warlord and brief husband of Daenerys Targaryen. For all his terrifying warrior credentials, Drogo's death - which came about from what was essentially an infected scratch - was a bit crap. Thrones fans would have loved to see him go toe-to-toe with the white walkers in Westeros, but it wasn't to be, and as far as we know Drogo rode off into the Night Lands, never to be seen again. Until now. Maybe. An Instagram post from Jason Momoa, who played the Dothraki chief in the enormously popular TV show, has sparked hopeful speculation amongst fans that Drogo could be about to make a comeback in next year's seventh season. Momoa is pictured really enjoying a pint of Guinness with showrunners David Benioff and D.B. Weiss at a bar in Belfast. https://www.instagram.com/p/BJWGv4Lha0n/?taken-by=prideofgypsies Obviously, maintaining a friendship with his old employers is hardly rock solid evidence of Momoa returning to the show, but Belfast also happens to be where most of the GoT filming takes place, so you can't blame people for putting two and two together. https://twitter.com/xXlouiesXx/status/768321815412248576?ref_src=twsrc%5Etfw https://twitter.com/SirenMika/status/768316861649788928?ref_src=twsrc%5Etfw https://twitter.com/KaylynnHarris/status/768516479163637760?ref_src=twsrc%5Etfw https://twitter.com/DanyUnburnt/status/767872915157164032 You'll remember that Drogo did make a season two reappearance during Dany's visions in the House of the Undying, so there's no reason why this couldn't happen again as she stakes her claim to the Iron Throne. The prospect of him somehow coming back to life is, you'd imagine, a lot less likely. But given that seemingly anything goes in Game of Thrones these days (just ask Jon Snow), and they're quite literally making it up as they go - don't totally rule it out!