The third series pushed things a lot harder, with Clarke pushed to the edge after her devastating decision in the last episode of series 2. I thought that Bellamy’s change of loyalty was a bit contrived but the other characters like Jasper and Monty were really pushed to the limit in a believable way.
The Ice Nation were the key antagonists for the first half of the series, driving a wedge between the Ark survivors and Trikru, with whom they had an alliance. One of the most powerful clans, they sought to take command from Lexa until she killed their queen.
Pike and Farm Station
The next set of antagonists came from within. The survivors of Farm Station crashed in Azgeda territory and had a brutal fight to survive. This fight hardened those left, including Christopher Pike and Monty’s mother. Pike swayed Arkadia’s populace into voting him Chancellor and he took action against the Grounders, believing that wiping them out was the only way to survive.
Luna and Floukru
We finally got to see Luna and the boat clan who’ve been hinted at since the first series. Living on an oil rig they are lead by Luna, who rejected the path of the Commander, choosing to live in isolation. When Clarke asked her to take the flame she refused after seeing the violence brought about by fighting ALIE.
We finally got to see Grounder city in this series. Set amid the remains of a city devastated by Nuclear war it’s one tower served as Lexa’s throne room, where the coalition was headed. The city also served as a trading hub where the different clans came together.
ALIE and ALIE 2.0
ALIE was an artificial intelligence created by Becca to save humanity. Deciding that the problem was ‘too many people’s she accessed Earth’s military networks and initiated a nuclear war that reduced the population to a handful of survivors. Her creator’s response was to create a new AI that fused with a human, making its needs the same as humanity’s. Becca fused the AI to herself and rallied the survivors – becoming the first Commander. When ALIE took control of the populations of both Polis and Arkadia, using the network City of Light which eliminated pain if users relinquished control, Clarke temporarily became Commander and finally removed the threat.
Clarke’s victory looks to be short lived as ALIE revealed another impending Nuclear meltdown in her final bid for control.