The 100's attack on Mount Weather left one survivor, a character that could potentially return in season 3.

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Emerson (Toby Levins) had already received the bone marrow treatment prior to the series two-part sophomore finale, and it appears Cage's henchman is still roaming the post-apocalyptic world (the same can't be said for his despicable cohort).

"The only survivor of Mount Weather is Emerson. He's out there, Lt. Emerson, probably to play a role," series creator Jason Rothenberg informed Buddy TV. "[However] the Mount Weather story has been told."

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Emerson almost met his demise during "Blood Must Have blood: Part 2," but he received a stay of execution when the original story for episode 16 proved too much to handle.

"One of the things - there was supposed to be an action scene in the hallway outside where Bellamy kills Emerson. But we had to lose it and ultimately I found it to be kind of interesting to leave him out there, dangling," Rothenberg told IGN, explaining that he originally meant to let any of the Undergrounders see another day.

Find out what's next for the lone Mountain Man when The 100 returns this fall. Click the video below to see a preview for the series' latest episode.

Tags: The 100 television the cw