Characters

The following is a list of recurring characters that have appeared on The 100 TV series.

Main Characters
Delinquents:
 * Clarke Griffin – A former medical apprentice, she was charged with treason for trying to expose the dwindling oxygen supply. Works as a doctor for the kids in camp, Well's ex-best friend, and is recognized as their leader who thinks with her head.
 * Bellamy Blake – Octavia's older brother who smuggled himself onto the dropship to escape punishment for shooting Chancellor Jaha. He became the de-facto leader for the delinquents until he eventually decided to share the job with Clarke, known as the one who thinks with his heart.
 * Octavia Blake – Bellamy's 17-year-old maternal half-sister who grew up hiding under the floor until she was arrested for being born illegally. She starts to identify with grounder culture while on the Earth since she felt rejected by the people on the Ark. Octavia serves as one of the main antagonists of Season Five through her obsessive desire to go to war with the Eligius prisoners for the last valley on Earth.
 * Wells Jaha – The son of the Chancellor and Clarke's ex-best friend. He intentionally got arrested to be sent to Earth with Clarke by damaging the last tree.
 * Finn Collins – Raven's boyfriend who was arrested for wasting 2 months worth of oxygen on a spacewalk. Finn became the primary tracker for the delinquents and Raven breaks up with him after realizing he fell in love with Clarke.
 * Jasper Jordan – Monty's best friend who was arrested with him for stealing medical supplies to grow pot. Jasper became a gunner and the primary chemist for the delinquents. Jasper serves as one of the tertiary antagonists of Season Four by advocating everyone give up finding a way to survive the Second Nuclear Apocalypse, having lost faith that humanity deserved to live.
 * Monty Green – Jasper's best friend who was arrested with him for stealing medical supplies to grow pot. Monty became the primary engineer and agriculturist for the delinquents.
 * Raven Reyes – Finn's girlfriend who works with Abby on the Ark to get to the Earth and later Clarke on the ground to help them survive, despite finding out Clarke slept with Finn. Raven became the primary mechanic for the delinquents.
 * John Murphy – A delinquent who got arrested for setting fire to the bunk of the officer that arrested his father. Initially banished and later turned traitor, Murphy evolves into someone who will often serve the side that most benefits him while trying to help his friends.

Ark Council:
 * Dr. Abigail Griffin – The Council's chief medical advisor, and Clarke's mother. Abby is an idealist who acts as a moral compass for most of the survivors including her daughter, but tends to be overprotective over Clarke.
 * Marcus Kane – The Vice Chancellor of the Ark who initially was more pragmatic and ruthless in his approach to survival. After several tragedies occur on the Ark, Kane softens into a more compassionate and well-respected leader.
 * Thelonious Jaha – The Chancellor of the Ark and Wells' father. He was shot right before the delinquents' dropship launched but managed to survive and continues to do what he thinks is best for his people.
 * Callie Cartwig – An officer aboard the Ark with close relationships with Kane and Abby before she was floated for an unknown crime.

Grounders:
 * Lincoln – The first grounder the delinquents come into contact with from Trikru. Lincoln does his best to help them and forms a relationship with Octavia.
 * Roan – The prince of Azgeda who returns from exile and is made king and his mother's death. Unlike most grounders under his command however, he only seeks to rule and protect his people, not start wars with other clans.
 * Echo – An Azgeda spy rescued from Mount Weather who initially plots against Arkadia, serving as the secondary antagonist of Season Four. After being banished by Roan and traveling to space, Echo comes to trust them and becomes Bellamy's girlfriend.

Book 2 Additions:
 * Jordan Green – Monty and Harper's son, who wakes everyone up from cryosleep so they can explore a new world that is inhabitable. Clarke and Bellamy are entrusted to take care of Jordan, who is naive and socially awkward having spent most his life on a ship.
 * Dr. Gabriel Santiago – The leader of the Children of Gabriel and initially opposes the main survivors while masquerading as a man named Xavier. He later becomes their ally in trying to take down the Primes and deciphering the Temporal Anomaly.
 * Hope Diyoza - Charmaine's daughter from the future who comes back to ask for help in saving her mother from a yet unknown enemy. Hope stabs Octavia for an unknown reason and her body disappears into the anomaly.

Sky People
Members of the space habitat, The Ark and later Arkadia.

Delinquents:
 * John Mbege – A delinquent who is friends with Murphy and later becomes one of Bellamy's lieutenants.
 * Fox – A delinquent who is lives in the dropship and is captured by the Mountain Men.
 * Atom – One of Bellamy's lieutenants who is charged with watching over Octavia.
 * Dax – A delinquent who got arrested for killing man who was stealing from him.
 * Jones – A member of Bellamy's Militia.
 * Charlotte – A delinquent who got arrested for assaulting a member of the Ark Guard. She tries to make her nightmares about Jaha, the man who had her parents executed, go away by killing Jaha's son Wells
 * Connor – A delinquent who hates Murphy and lead a lynch mob to kill him after he was accused of killing Wells.
 * Bree – A promiscuous delinquent who is often seen partying and sleeping with other delinquents.
 * Roma Bragg – A member of Bellamy's Militia who slept with Bellamy.
 * Zoe Monroe – A member of Bellamy's Militia and who survives the battle with the grounders and follows Bellamy to rescue their people after they are captured by the Mountain Men.
 * Nathan Miller – A delinquent who got arrested for theft and whose father is a member of the guard. Nathan is one of the main lieutenants of the delinquents over the years.
 * Drew – A member of Bellamy's Militia.
 * Sterling – A member of Bellamy's Militia and who survives the battle with the grounders and follows Bellamy to rescue their people after they are captured by the Mountain Men.
 * Harper McIntyre – A delinquent gunner who later becomes Monty's girlfriend. Harper is one of the main lieutenants of the delinquents over the years.
 * Myles – A member of Bellamy's Militia who seems to have a crush on Clarke.

Citizens:
 * Dr. Eric Jackson – A neurosurgeon on the Ark who works with Abby as her advisor and medical assistant.
 * Officer/Major Costa – A member of the guard.
 * Jacapo Sinclair – The chief engineer aboard the Ark and Raven's mentor who serves as a father figure to her. Sinclair is trusted and respected by the Ark Government and delinquents.
 * Commander Shumway – A corrupt member of the Ark Guard and one of Diana's followers, who had Bellamy shoot Jaha.
 * Red – A mechanic on the Ark who ultimately chose to go to the Earth with Diana and her followers.
 * Cole, Kaplan, Muir, and Fuji – Members of the Ark Council that govern the people living on the Ark.
 * Jake Griffin – Clarke's father who was floated for trying to warn the Ark citizens that the oxygen supply was dwindling. Occasionally appears to Clarke when she is struggling with something.
 * Vera Kane – Kane's mother who serves as the religious leader of the Ark preaching that one day they would return home. She and her church work to keep a tree alive so that it maybe planted in the ground one day.
 * Miss Lucy – A citizen aboard the Ark, who is entrusted to take care of Reese Lemkin after her father died in the Culling.
 * Diana Sydney – The former Chancellor who reinvents herself as an advocate for the working class citizen. Diana serves as one of the main antagonists of Season One after it is revealed she has been orchestrating a coup against Jaha.
 * Cuyler Ridley – A mechanic onboard the Ark whose wife was killed in the Culling. After this he plots with Diana to kill Jaha and the rest of the Council in revenge.
 * Lieutenant Graco – A member of the Ark Guard and one of Diana's followers.
 * Kyle Wick – An engineer who worked closely with and later dates Raven until they break up after the Mount Weather War.
 * Major Byrne – The leader of the Ark Guard after the Ark crashed to Earth to save what was left of the people after Diana killed most of them.
 * Sergeant David Miller – Nathan's father and a member of the Guard.
 * Mel – The sole survivor of the Factory Station after it crashed to Earth.
 * Caspian – One of Jaha's followers in search of the City of Light.
 * Craig – One of Jaha's followers in search of the City of Light.
 * Richards – One of Jaha's followers in search of the City of Light.
 * Gina Martin – Bellamy's girlfriend in the months after they saved their people from Mount Weather.
 * Charles Pike – The Earth Skills teacher of the Ark and leader of the Farm Station survivors. Pike serves as the secondary antagonist of Season Three as he starts a war with the grounders after being elected Chancellor.
 * Hannah Green – Monty's mother and one of Pike's lieutenants from the Farm Station.
 * Bryan – Nathan's boyfriend back on the Ark and flew to Earth with the other Farm Station survivors. Initially follows Pike until Nathan sides against him and Bryan joins him.
 * Shawn Gillmer – One of Pike's lieutenants who holds a strong hatred for grounders.
 * Chase – An Arkadian Guard who becomes one of Pike's followers.
 * Riley – A Farm Station survivor who was captured and enslaved by Azgeda before being rescued.
 * Hayes – An Arkardian citizen who joins Jasper's cult that wants to die rather than survive.
 * Geoff Hardy – An outraged citizen who leads two riots against the Arkadian government.
 * Ethan Hardy – Geoff's son, who he entrusts Jaha to take care when he can't stay in the bunker.
 * Kara Cooper – The manager of the hydroponic farm in the bunker who lost her father and husband in separate Cullings. While initially leading a rebellion against Octavia, she later becomes one of her most trusted lieutenants.
 * James Crockett – An engineer and a member of WonKru alongside his mother, but his mother was killed in the battle for the valley.
 * Denby, Wilson, Taggart – Minor members of the guard.

Grounders
Grounders refers to people born on the Earth's ground, excluding those born in space or in Mount Weather.

Trikru:
 * Anya – The leader of a group of grounder warriors that fight a war against the delinquents when they arrive. Anya serves as one of the main antagonists of Season One after she is shown leading the army trying to exterminate the delinquents.
 * Tristan – A high-ranking grounder sent by the "Commander" to take over Anya's effort to exterminate the delinquents. Tristan ultimately underestimates them which results in his entire army being burned alive and he is killed soon after.
 * Nyko – Lincoln's friend and the primary healer of their village. Like Lincoln, Nyko does his best to help the Arkadians but he is still loyal his people first.
 * Indra – The war chief of the village Tondc, which Lincoln belonged to and initially harbored deep resentment toward the Arkadians. Indra eventually became one of their closest allies, even personally training Octavia to be a warrior.
 * Rivo – A warrior who was captured by the Arkadians and later leads them to their Commander to negotiate a truce.
 * Penn – A warrior from Indra's village who fights in the war against the Mountain Men.
 * Artigas – A young warrior from Indra's village who forms a bond with Octavia.
 * Lexa – The Commander of all the grounder clans who eventually negotiates a peace with the Arkadians, to the disapproval of her people.
 * Gustus – Lexa's most trusted advisor who is against Lexa forming a truce with the Arkadians.
 * Ryder – A warrior who was tasked by Lexa with guarding Clarke during the war with Mount Weather.
 * Fio – One of Trikru's greatest warriors who has an adversarial relationship with Octavia.
 * Niylah – The owner of a trading post who has a more peaceful attitude than most grounders who also has an on-off relationship with Clarke.
 * Titus – Lexa's flamekeeper who advises Lexa to abandon the Arkadians and kill Clarke.
 * Denae – A sick grounder who comes to Arkadia for help but is imprisoned when Pike takes command.
 * Semet – The head of the small village that hates the Arkadians for massacring their army.
 * Juel – A warrior who helps Indra fight against A.L.I.E. after she has taken over Polis.
 * Gaia – Indra's daughter who becomes the new flamekeeper after Titus died. Gaia's faith in the Flame overrides everything else, even her own people.
 * Sheidheda – The Dark Commander who is known as the most brutal and vicious Commander in the history of the grounders. Although dead, he serves as the secondary antagonist of Season Six as he fights for control of Madi's mind through the Flame.

Azgeda:
 * Atohl – The warriors second of a war chief who arrive at Tondc to discuss the plan to attack Mount Weather.
 * Nia – The Queen the of the Azgeda tribe and Roan's mother. Nia serves as the tertiary antagonist of Season Three as she plots to usurp Lexa's position as "Commander" and rule over all 12 clans herself.
 * Ontari – A nightblood who Nia tries to use to usurp Lexa and later seeks to become the Commander no matter what it takes after Nia and Lexa's deaths.
 * Seiku – A warrior who faithfully serves Roan in his time as King.
 * Obika – A warrior who makes it to the bunker and comes to serve in Octavia's Wonkru army.

Floukru:
 * Luna – The nightblood leader of Floukru, who fled to make a home for those sick of fighting. Luna serves as the main antagonist of Season Four as she comes to believe that humanity doesn't deserve to be saved and fights in the Final Conclave to ensure no one enters the bunker.
 * Adria – A child living on the oil rig and seems to share a special bond with Luna.

Louwoda Kliron Kru:
 * Madi Griffin – A nightblood and Clarke's adopted daughter who survives together with her after the Second Nuclear Apocalypse. Madi eventually becomes the new Commander and leads her people into space.
 * Tarik – A member of Wonkru who tries to surrender to the Eligius prisoners but is shot by Kara before he can make it to their ship. He is later used to incubate worms to use against them.
 * Karina – A member of Wonkru who tries to surrender to the Eligius prisoners but is shot and killed by Kara.

Sangedakru:
 * Caris – The warriors second of a war chief who fights in the battle against Mount Weather.
 * Brell – The Sangedakru Delegate who speaks for her tribe as it is absorbed in Wonkru.

Mutants:
 * Emori – A nomadic grounder who was self-serving and became Murphy's girlfriend. Emori eventually became Raven's apprentice, learning how to become a mechanic and pilot.
 * Otan – Emori's brother who turns against her after joining the City of Light.
 * Gideon – A servant of the City of Light who died protecting A.L.I.E.

Other Grounders:
 * Uzac – A Yujleda ambassador that isn't afraid to challenge the Commander if it is in the best interest of his people..
 * Aden – A nightblood and Lexa's intended first choice to succeed her as Commander when she dies.
 * Ilian – A Trishanakru warrior that fights for his clan in the final conclave for the bunker. Ilian serves as one of the tertiary antagonists of Season Four in his quest to destroy any technology in revenge for A.L.I.E. killing his family.
 * ‘Baylis’ – A thief from Boudalan that breaks into Becca's lab to steal supplies and who is used to test synthetic nightblood after Emori lies about his identity.
 * Guara – A Podakru War Chief that fights for her clan in the final conclave for the bunker.
 * Cosser – A member of Wonkru who surrenders to the Eligius prisoners but is killed by them soon afterwards.
 * Lindo – A member of Wonkru who surrenders to the Eligius prisoners but works against them.

Mountain Men

 * Dante Wallace – The President of Mount Weather who tries to serve both his people and the delinquents.
 * Maya Vie – A citizen who is against the policy of using grounder blood to heal them and bone marrow to cure them.
 * Dr. Lorelei Tsing – The chief medical officer for Mount Weather and the one in charge of the Harvest Project. Tsing serves as one of the secondary antagonists of Season Two as the most vocal and uncaring advocate for killing all the delinquents and harvesting them for their bone marrow to allow them to walk on the ground again.
 * Keenan Mykulak – A docent who gives the delinquents a tour of their facility.
 * Lee – A Mount Weather security guard who sides with the delinquents after Cage overthrows his father.
 * Cage Wallace – President Wallace's son and the head of security for Mount Weather. Cage serves as the main antagonist of Season Two through his plot to overthrow his father and harvest the delinquents of their bone marrow until they are dead so he and his people can walk on the ground again.
 * Lieutenant Carl Emerson – A Mount Weather security guard who is loyal to Cage. Emerson serves as one of the secondary antagonists of Season Two as Cage's second-in-command after he overthrows his father and is later the last of his people.
 * Whitman – A Mount Weather security guard who relays coordinates for a missile strike on Tondc and picks off the survivors with a sniper rifle.
 * Vincent Vie – Maya's father who was part of an underground movement to that was against using grounder blood and later bone marrow from the delinquents to treat them.

Eligius IV
Eligius IV includes crewmembers and prisons aboard the Eligius IV mining vessel. They left Earth before the first nuclear apocalypse and survived through cryosleep.

Eligius IV:
 * Charmaine Diyoza – A former navy seal and colonel for the US Navy turned mass-murdering terrorist and the leader of the prisoners. Charmaine serves as one of the main antagonists of Season Five through her refusal to share the last valley on Earth with anyone besies her own people.
 * Paxton McCreary – A former mob/cartel enforcer and the original leader of the prisoners before Charmaine took over. McCreay serves as one of the main antagonists of Season Five as the leader of a faction of prisoners and plans to usurp control from Charmaine and take the last valley on Earth for himself.
 * Miles Shaw – The sole survivor and pilot of the Eligius crew who helped the prisoners take over the ship and kill the rest of the crew. Although initially on their side he helps Wonkru and Spacekru when he can.
 * Michael Vinson – A serial killer who is the first patient Abby treats and forms a bond with her.
 * Roz Rankin – A prisoner who is loyal to McCreary and goes with him to find Murphy after he escapes.
 * Robert – A prisoner who is loyal to Diyoza.
 * Hugo – A prisoner who is loyal to McCreary.

Alpha
The people of moon Alpha are members of Mission Team Alpha, embryos brought from Earth, and their descendants.

Primes:
 * Russell Lightbourne – The King of Sanctum and the leader of the original Eligius science expedition to explore Alpha. Russell and his family serve as the main antagonists of Season Six as the ones killing people so the Primes can be resurrected in their bodies.
 * Dr. Simone Lightbourne – Russell's wife and the Queen of Sanctum who is more ruthless and cautious in her approach to handling threats.
 * Josephine Lightbourne – Russell's daughter and a biologist who takes over Clarke's body after her parents subdue Clarke. Josephine is a vengeful, manipulative and psychotic narcissist works to make more nightbloods to continue being worshiped as a goddess.
 * Kaylee Lee – Josephine's ex-best friend and a pilot who tries to flee Sanctum with her family using the Gagarin.
 * Miranda Mason – A doctor who wants to use Rose to bring back her daughter Jasmine.
 * Ryker Desai – A mechanic who doesn't live in the palace because he is still uncomfortable with what the Primes are doing.
 * Priya Desai – Ryker's mother who taught him everything he knows about mechanical engineering. Priya is brought back using Delilah as her host body.
 * Jasmine Mason – Miranda's daughter who is brought back using Jade as her host body.
 * Caleb Mason – Miranda's husband who is brought back using Bryson as his host body.

Sanctum Citizens
 * Rose – A nightblood who is groomed to be a host for Jasmine.
 * Jade – A member of the Royal Guard who served as Rose and later Josephine's bodyguard. She is later turned into a nightblood to serve as a host for Jasmine.
 * Delilah Workman – A nightblood who is groomed to be a host for Priya and forms a romantic relationship with Jasper.
 * Cillian – A doctor who seems close to the Primes but is actually a spy working for the Children of Gabriel.
 * Cassius – The head of the Royal Guard who is charged with protecting the Primes and their hosts as well as maintain order in the city.
 * Blythe Ann Workman – Delilah's mother who turns against the Primes after it is revealed her daughter is dead and not bonded with Desai.
 * Jae Workman – Delilah's father who turns against the Primes after it is revealed her daughter is dead and not bonded with Desai.
 * Sierra – Gavin's wife and a member of the Royal Guard who was turned into a nightblood to serve as a host for Miranda.
 * Gavin – Sierra's husband and a member of the Royal Guard who is turned into a nightblood to serve as a host for Markus.
 * Bryson – A member of the Royal Guard who is turned into a nightblood to serve as a host for Caleb.

Children of Gabriel
 * Tosh – A lieutenant who advocates killing nightbloods so the Primes don't have anymore hosts, whether they are adults or children.
 * Geo – A terrorist who attacks the Gagarin with his people and hates Charmaine for killing one of his friends.
 * Nelson – A lieutenant who comes to trust the Earthers in preparation to attack the Primes.
 * Layla – Nelson's second-in-command and Xavier's brother who hates Gabriel for transferring his consciousness into Xavier's body.

Other Characters
Historical (Pre-Apocalypse)
 * Chris – A scientist who tried to stop A.L.I.E. but failed and killed himself in his depression.
 * Becca Franco – The scientist who created A.L.I.E and later A.L.I.E. 2.0, which would later be known as the Flame.
 * Bill Cadogan – The leader of a doomsday cult called the Second Dawn, which survived the Nuclear Apocalypse in a bunker. Cadogan and his cult would later be known as the ancestors to grounders.
 * Dave – A college student who had a crush on Josephine but killed himself to scar her for life because she didn't return his feelings.

Artificial Intelligence
 * A.L.I.E. – An artificial intelligence program created to make life better for mankind but caused the Nuclear Apocalypse as she saw overpopulation as humanity's biggest problem. A.L.I.E. serves as the main antagonist of Season Three as she tries to brainwash and coerce everyone into joining the City of Light.