WARNING: The following contains spoilers for "The Children of Gabriel," the third episode of The 100 Season 6.
One of the most contentious relationships in all of The 100 has been between siblings Bellamy and Octavia Blake. The series started with Bellamy raising his little sister in secret due to the survivors' longstanding one child policy. Since then, Octavia has become one of the most recklessly violent characters in the post-apocalyptic series, brutally leading a bunker full of survivors under her own bloody regime and earning the title the Red Queen. Things have deteriorated steadily between the two siblings for years and, in the latest episode, have finally reached a breaking point.
Upon first arriving at the alien world of Sanctum, Bellamy strongly advocated keeping Octavia in cryosleep; he was wary of how his unpredictable sister would react to the new planet, particularly with the memory of her bloody actions throughout Season 5 still fresh. This hope was quickly dashed when Octavia was revived by one of her loyal followers, and the two siblings have remained at odds throughout the beginning of Season 6, reaching a tipping point in the latest episode as they led to a team back to the expedition's lander on Sanctum's surface.
As they attempt to return to the main spaceship, the Eligius IV, the expedition discovers their lander has been attacked by a new faction of humans known as the Children of Gabriel. With Madi and Diyoza apparently paralyzed by poison darts and at their mercy, Octavia takes it upon herself to launch a one-woman assault against their attackers despite Bellamy and Echo's warnings. Undeterred, Octavia singlehandedly kills all of the assembled Children of Gabriel as Bellamy and Echo watch in horror.
Octavia's savagery has been a steadily growing problem over the course of the series, often setting her apart from her brother and leading to her ascension as the Red Queen. After spending five hellish years in the leadership role, a reign which included instituting forced cannibalism and lethal gladiatorial games, Octavia became conditioned to decisively crush any opposition to her rule. This reached a peak in Season 5, when Octavia forced Bellamy to fight in the gladiatorial pit, refusing to recognize him as her brother.
This ruthless action has now been repaid in the wake of Bellamy witnessing Octavia's latest bloody rampage. Despite her protests that her actions allowed them to rescue the hostages, Bellamy leaves behind his sister on Sanctum, hoping the time alone will help her realize that her reckless actions continue to be a cause for grave concern. While Octavia attempts to appeal to Bellamy as his sister, he reminds her that he feels his actual sister had died long ago. As he departs, he's comforted by Echo and wipes away tears unseen by Octavia as the lander returns to space.
With its characters going throtogh extreme lengths to survive and falling into different factions over the course of the series, many of the surviving characters on The 100 have been at odds with each other at one point or another as alliances shift. One of the most heartbreaking dissolutions and betrayals has been between the Blake siblings, as Octavia has descended further and further into brutality to ensure not just her own survival, but that of hundreds of others. And while the possibility for reconciliation between the two remains as they grow accustomed to their new alien home on Sanctum, Octavia's attack on the Children of Gabriel proves she may have a long way to go before she earns Bellamy's trust again.
The 100 returns on the CW for its sixth season on April 30 at 9 pm ET/PT. The series stars Eliza Taylor, Paige Turco, Marie Avgeropoulos, Bob Morley, Henry Ian Cusick, Lindsey Morgan, Richard Harmon and Tasya Teles.