The 100 (pronounced The Hundred [2]) is an American post-apocalyptic science fiction drama television series that premiered on March 19, 2014, on The CW, and ended on September 30, 2020.

The juvenile delinquents include Clarke Griffin (Eliza Taylor), Finn Collins (Thomas McDonell), Bellamy Blake (Bob Morley), Octavia Blake (Marie Avgeropoulos), Jasper Jordan (Devon Bostick), Monty Green (Christopher Larkin), and John Murphy (Richard Harmon).

Under the leadership of Clarke and Bellamy, the juveniles attempt to survive the harsh surface conditions, battle hostile grounders and establish communication with the Ark.

In the third season, Alpha Station, renamed Arkadia, comes under new management when Pike, a former teacher and mentor on the Ark, is elected as chancellor and begins a war with the grounders.

– who was commanded to make life better for mankind – is revealed to have responded to the problem of human overpopulation by launching the nuclear apocalypse that devastated Earth, and begins to use ingestible computer chips to take control of peoples' minds.

In the fourth season, two dozen nuclear reactors around the world are melting down due to decades of neglect that will result in the majority of the planet becoming uninhabitable.

When it is discovered that the grounders with black blood – known as the Nightbloods – can metabolize radiation, Clarke and the others attempt to recreate the formula, but fail to test it.

In the sixth season, after 125 years in cryosleep, Clarke, Bellamy, and the others wake up to find out that they are no longer orbiting Earth and have been brought to a new habitable world, Alpha, also known as Sanctum.

Throughout the season, Madi is haunted through the Flame AI by the spirit of the Dark Commander, an evil grounder leader that had ruled when Indra was a child.

After vanishing and being believed dead for some time, Bellamy returns but converts to the Disciple cause, having gone through a life-changing experience while stuck in the cold and treacherous mountains.

At the end of the series, the Dark Commander is permanently killed by Indra and humanity achieves Transcendence aside from Clarke who committed murder during the test.

They find out the test isn't an actual war, but a way to join the alien hive mind, which is a peaceful universal consciousness that grants immortality.

They will not have children, due to their infertility and sterility, and the series ends with Clarke's group being the last humans to ever live on the mortal plane of existence, on a pristine Earth, which is now habitable again.

[42] Because of this, Peterson posited an accelerated evolution in which the early Grounders used a cant specifically to obfuscate their speech and to differentiate between friend or foe.

[42] On March 12, 2020, Warner Bros. Television shut down production on all of their shows due to the COVID-19 pandemic, however, writer Kim Shumway confirmed they were able to complete filming for their seventh season.

[53] For the second season, Adina Porter and Raymond J. Barry were cast in recurring roles as Indra and Dante Wallace, respectively, along with Alycia Debnam-Carey as Lexa.

The site's consensus reads: "Although flooded with stereotypes, the suspenseful atmosphere helps make The 100 a rare high-concept guilty pleasure.

[97] In an early negative review of the first season, Brian Lowry of The Boston Globe said: "Our attraction to Apocalypse TV runs deep, as our culture plays out different futuristic possibilities.

"[100] At the start of the series, Allison Keene of The Hollywood Reporter said the show "has a lot of interesting things to play with in terms of its narrative and world-building, but it chooses to gloss over them", presenting "The CW's ultimate vision for humanity: an Earth populated only by attractive teenagers, whose parents are left out in space.

The site's consensus reads: "The 100 hones all of the things that make it tick for a dynamic second season complete with fast-paced storylines, vivid visuals, and interesting characters to root for – or against.

"[105] Maureen Ryan of The Huffington Post, wrote: "I've rarely seen a program demonstrate the kind of consistency and thematic dedication that The 100 has shown in its first two seasons.

"[108] Variety's Maureen Ryan stated in an early review of the season: "The show is more politically complicated than ever, and the world-building that accompanies the depiction of various factions, alliances and conflicts is generally admirable.

The site's consensus reads, "Season 4 of The 100 rewards longtime viewers with a deeper look at their favorite characters, as well as adding exceptional nuance and depth to their thrilling circumstances.

The site's consensus is, "The 100 successfully resets its game, proving that conflict lies within these characters rather than their environment, and sows the seeds for a killer final season.

[122] On the other hand, Yana Grebenyuk of TV Fanatic criticized the various subplots, referring to the season finale "The Blood of Sanctum" as "a collective statement on what happens when there's too much plot and not enough time found to pace it".

Grebenyuk called the episode out for "undermin[ing] the two leads, their love for one another, and the show's entire message";[125] Den of Geek reviewer Delia Harrington viewed his re-characterization and subsequent death as "baffling".

[127][128] Zack Giaimo of FanSided writes "despite some good scenes, the series finale of The 100 wastes a lot of the character development of the last seven seasons".

In 2016, the series and showrunner Jason Rothenberg faced widespread controversy when Lexa, the leader of the Grounders and a lesbian character, was killed off in the third-season episode "Thirteen".

[134] Rothenberg eventually wrote in response, "I [...] write and produce television for the real world where negative and hurtful tropes exist.

"[135] Additionally, Debnam-Carey's concurrent role in the series Fear the Walking Dead was presented as an off-screen reason for Lexa's death.