10 Episodes · Premiered September 6, 2016 · Ended November 1, 2016
Season three continues the Gecko brothers' saga, as they fight their way through the world of culebras, the vampire-snake hybrids that control hidden empires in Texas and Mexico. Once the baddest outlaws in the land, Seth and Richie made a run for the border two years ago, to save their lives – and their fortune. They ran headlong into a bar full of bloodsuckers and bandits, facing off with the vampire goddess, Santánico. The Geckos joined her cause, and they settled an old score. It won them a place in the culebra world. Now, that world is about to explode, and new enemies are gathering – dark forces, hell-bent on destruction and domination. It's up to the Geckos to stop them – but they can't do it alone.
A new enemy determined to destroy all culebras infiltrates the organization following the Lords' decision to demote Seth and Richie to collector.
Seth and Richie discover that Santanico Pandemonium has been targeted by an ancient queen who's taking on a familiar form. Meanwhile, Freddie and Ximena end up in a confrontation after a trail of massacres leads them to Brasa.
Freddie joins forces with an old enemy in order to destroy a demon who's enslaving culebras. Meanwhile, Seth and Richie track down an ancient hunter.
When Amaru puts Scott Fuller in her sights, the Geckos and their team must defend him against Brasa's most lethal fighters yet – Jaguar Warriors from hell.
Seth and the team head to a suburban neighborhood after its citizens are attacked by cannibals.
Richie calls Seth for help after waking up in an abandoned asylum. Elsewhere, Seth assembles the team in case of a trap; and Amaru unleases a demon like no other.
The team catches a lucky break against Amaru. But nothing is what it seems, as out heroes fall victim to the seductions – and horrors – of a female Xibalban demon.
Santanico returns with a new secret – and a potential new ally – leading the Geckos to Lord Venganza, who is hiding out in a bloody culebra prison.
The Gecko brothers follow Amaru to a mysterious Western town, where she plans to reclaim her true form and open the gates of hell.
With Kate Fuller near death, our heroes race against an eclipse to defeat Amaru and close the gates to Xibalba, before hell consumes the world.
