WARNING: The following article contains spoilers for "The Blood of Sanctum," the Season 6, finale of The 100.
Another season of The 100 has come to an end: a season that saw characters travel from an uninhabitable Earth to the faraway world of Sanctum in an effort to rebuild humanity elsewhere. However, as per the post-apocalyptic series' tradition, this fresh start was not at all a peaceful or tranquil one, with returning characters facing a whole new world of dangers that claimed the life of own of their own as early as the season premiere. As the season continued, the survivors from Earth battled Sanctum's ruling class, the Primes, resulting in further deaths.
Here is the complete list of all the major characters from The 100 that met their untimely end over the course of Season 6.
ZEKE SHAW
The first death of the season was recurring character Zeke Shaw, a pilot and mechanic introduced during Season 5 who would go on to become Raven Reyes' love interest. After emerging from cryosleep on board the Eligius IV, Shaw piloted the lander as part of the expedition to explore Sanctum. During the first night, the group was attacked by a swarm of ravenous insects, leading to them running for cover.
Along the way, Shaw ran into a powerful forcefield erected around an undiscovered community on Sanctum, resulting in him receiving lethal radiation poisoning. In his final moments, Shaw directed Clarke with how to lower the forcefield and save his friends from the swarm. Killed in the season premiere, Shaw's death set the tone for Season 6 moving forward.
MARCUS KANE
In the final episodes of Season 5, Marcus Kane had developed a life-threatening infection that progressed aggressively across his body. Placed in cryosleep for much of the season, even after arriving on Sanctum to keep the infection from spreading, Kane's consciousness was transferred to a new host body by Abby Griffin and the Prime Simone, testing out the Primes' strategy to create a whole new wave of host bodies to guarantee themselves immortality.
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Horrified that his survival came at the cost of his new body's original consciousness, Kane decides to take matters into his own hands when he learns of the Primes' plans. Taking the remaining Nightblood, the blackened, radiation-resistant blood necessary for the mind transfer, Kane returns to his original body and ejects himself and the Nightblood into outer space after one last tearful goodbye with Abby.
ABBY GRIFFIN
Mother of the series' main protagonist, Clarke, Abby has been the leading physician among the characters ever since The 100's pilot episode. However, over the course of the series, Abby's decisions had led to her morality being questioned by the others and estranged from several characters including Raven. For much of Season 6, Abby had worked with the Primes to develop new Nightblood, ultimately donating her own bone marrow for the process to save the life of her adopted granddaughter Madi.
This association would ultimately lead to her death when the Prime leader Russell used Abby as a new host body for his wife Simone. Russell ensured that the neural mesh that had saved Clarke's psyche from being completely replaced by the Prime Josephine had been removed from Abby, guaranteeing the death of Abby's consciousness, with her life literally flashing before her eyes in her final moments.
THE PRIMES
The 100 have often triumphed over rival factions that threaten their annihilation and Season 6's Primes proved to be no different. Initially welcoming the passengers from the Eligius IV into their community, it was discovered how the Primes unnaturally prolong their existence through host bodies and their plans to turn the last survivors from Earth into their newest viable hosts.
Teaming up with a splinter faction on Sanctum known as the Children of Gabriel, Clarke posed as the Prime Josephine to infiltrate the community and lower the shields around them. As chaos erupted when the Primes' followers learned the truth about their rulers, Russell and the remaining Primes escaped in a desperate bid to seize control of the Eligius IV only for the majority of them to be ejected into space by Clarke. At the moment, Russell is the only surviving Prime, taken captive by Clarke and the others.