Sky People/Delinquents

The Delinquents, also known as The 100, or The Invaders, are a group among the Sky People of one hundred adolescent arrested for committing various crimes who, after it became clear that the Ark was dying, were secretly sent to Earth in order to determine if the planet had become habitable enough for the rest of the sky people to survive in exchange for being pardoned of their crimes.

While Bellamy Blake and Raven Reyes are among the group of Delinquents before the rest of their people reach Earth, they are not counted as members of the 100 and were not sent to Earth by The Council. Bellamy stowed aboard the drop ship after shooting Chancellor Jaha while Raven built her own escape pod.

History
With life on the Ark in dire question, the Council sent 100 delinquents ages fourteen to nineteen to the ground. Fitted with bio-tracking bracelets, these young criminals were the canaries sent to see if the Earth is viable for life once more. This entire operation was a complete secret to all on the Ark, with elaborate stories being spun of a viral infection breaking out in the prison station, preventing families from visiting.

Not even the delinquents knew that the Ark's life support would not last more than a few months at best.

Loaded into a dropship with almost zero supplies, the 100 were sent down to the ground. They were intended to land near the emergency response facility known as Mount Weather, but a malfunction in the navigation system caused them to crash twenty-some kilometers from the mountain.

The 100 quickly discovered that the Earth was not only survivable, but home to survivors. They fought with these so-called Grounders, and brokered a temporary peace with them, just in time to discover that not only was the remaining population of the Ark coming down to the Ground, but the Grounders were not the biggest threat to them.

48 of their number were captured by the Mountain Men, survivors from Mount Weather, and the remaining Delinquents and the rest of the Arkers were forced to work with the Grounders to rescue the captured Delinquents, free Grounder prisoners, and destroy the power of Mount Weather forever.

At the beginning of Season One, the Delinquents are introduced as criminals with many of them referred to solely by their last name. Several Delinquents appeared to know each other from before or during their lock-up in the Sky Box. Early on, Bellamy convinced many of the Delinquents to take off their wristbands so the Ark would not think the ground was survivable. Bellamy and Clarke eventually start leading the Delinquents and teach them how to fight and how to use guns. After the battle with the Grounders at the end of Season One, 54 were left alive, in addition to Bellamy and Raven.

In the beginning of Season Two, the fates of many Delinquents was uncertain. Seven Delinquents escaped the camp before the explosion at the end of Season One: Octavia (with Lincoln), Finn Collins, an unknown Delinquent (later killed) , Bellamy, Monroe, Sterling, and John Murphy (held captive by Grounders). After the ring of fire, the other Delinquents were taken from the dropship by the Mountain Men, however, Raven was left behind.

Throughout Season Two, most of the Delinquents were held captive within Mount Weather. Originally, 48 were in Mount Weather including Clarke, Jasper, Monty, Miller, Harper, and Fox. When they discovered the Mountain Men wanted to use their blood to counteract radiation poisoning, they fought back, taking up arms and killing several Mountain Men.

Despite their efforts, they lost five delinquents to bone marrow harvesting, including Fox. After Clarke escaped, 42 of the 47 Delinquents left in Mount Weather managed survived their captivity, including Jasper, Monty, Miller, and Harper. By the end of Season Two, 46 Delinquents were left alive of 100, in addition to Bellamy and Raven.

At the start of Season Three, there were 44 Delinquents in Arkadia, including Octavia, Monty, and Jasper. Several of the Delinquents have become part of the Arkadia Guard. Clarke and Murphy were the only two Delinquents not in Arkadia with Clarke living in the forest before coming to Polis and Murphy stuck in a bunker, then traveling with Emori, before eventually also arriving in Polis. Octavia left Arkadia after Pike, Bellamy, Hannah, and the rest of Farm Station massacred the Trikru army sent by the Commander to protect them from the Ice Nation.

Monroe was the first Delinquent to die in Season Three. An unnamed delinquent chipped by ALIE was later gunned down by Pike and Indra in Polis, leaving the total number of Delinquents still alive at 44.

Alive
Including Bellamy and Raven, there were originally 102 Sky People sent to Earth prior to The Ark coming down.

Before the final battle with the Grounders during the Season One finale, there were 18 dead and 82 Delinquents still alive at The Camp, in addition to Bellamy and Raven. After the battle, there were 54 Delinquents still alive, in addition to Bellamy and Raven.

At the end of Season Two, after Bellamy and Clarke irradiated Level 5, there were only 46 Delinquents left, in addition to Bellamy and Raven.

In Season Three, Zoe Monroe died in Bitter Harvest, and an unnamed female delinquent chipped by ALIE died in Perverse Instantiation (Part 1) leaving 44 delinquents alive.

Jasper Jordan

Unknown Status
The Delinquents who have not been seen since Season One and may be among the 27 Delinquents who died in The Woods Clan-Sky People Conflict:

Deceased
The deaths of the Delinquents in order since the drop ship landing in the Pilot are the following:

Named onscreen
The following names are legible on the monitors in Earth Monitoring Station during various scenes in "Pilot".
 * ♂/♀ Gender, based on portrait and/or given name.
 * (G) Surname matches a known Ark Founder.

Delinquent Guard
"The real guard will be here soon unless we stop it. You don't actually think they're gonna forgive your crimes. Even if they do, then what? Guys like us, we're gonna become model citizens now; get jobs, if we're lucky? Maybe pick up their trash?"

- Bellamy Blake to the Delinquents

The Guard, sometimes referred to as Gunners, are a faction among the Delinquents who followed Bellamy Blake's orders throughout the first season. Originally, John Murphy started to form a gang when they arrived on Earth. After Bellamy found out that the Ark might be coming down and he would be charged for his crimes, he took over Murphy's gang and made himself the leader. They soon picked up the phrase "whatever the hell we want," though this phrase stopped being used after the Delinquents realized they would need rules to survive. Once Bellamy and Clarke Griffin brought back guns, many of these people became one of the twenty Gunners trained on using the guns and were the first line of defense against the Grounders during The Woods Clan-Sky People Conflict.

Notes and Trivia

 * "The 100" was the official name of the Ark Government Program to test existing earth survivability.
 * Originally, only 100 Delinquents were sent to the ground, not including Bellamy Blake and Raven Reyes
 * Two Delinquents died before landing
 * Bellamy sneaked aboard the drop ship to be with his sister, Octavia Blake
 * Raven arrived 11 days later after rebuilding an escape pod and launching off from The Ark
 * So far 57 Delinquents have been killed from landing, environment, each other, illness, Grounders, and Mountain Men.
 * 46 Delinquents died in season 1
 * 8 Delinquents died in season 2
 * 2 Delinquents died in season 3