Jacapo Sinclair

Sinclair is a recurring character in the first, second, and third season. He is portrayed by actor Alessandro Juliani.

Sinclair is a former inhabitant of the Ark and worked in the Earth Monitoring Station with Abigail Griffin. He currently supervises the construction of Camp Jaha.

Throughout the Series
In Pilot, Sinclair informs Kane in the Earth Monitoring Station that the programming in the Delinquents' wristbands has been lost during the dropship's descent and that they can only see their vital signs.
 * -|Season One =

In Twilight's Last Gleaming, he requests The Chancellor, Thelonious Jaha's permission for The Culling to begin, and for him to press the button to kill everyone in section 17. Thelonious however steps forward and presses the button himself.

In Contents Under Pressure, Sinclair can be seen listening in on the transmission The Ark is receiving. Sinclair manages to zero in on the frequency channel Raven Reyes is using. When Clarke Griffin gets on the microphone and reveals that Wells Jaha is dead, Sinclair feels remorse for Thelonious.

In Unity Day, Sinclair is seen informing Jaha that a few stations on The Ark have lost all power. He then informs him that if Diana Sydney manages to take off in the Exodus ship then she will cut off almost all power on The Ark, killing most of the Citizens. Later he is seen aiding Jaha, Kane and a few other guards try to keep the doors to the Exodus Ship open to prevent its launch. They are able keep the doors open but, it is forced closed when a man jumps on the Exodus Ship after he learns from Diana Sydney that there are not enough drop ships for all the Citizens on the Ark. Sinclair and the others stand back, the Exodus Ship takes off and all power on the Ark is lost.

In The Calm, Sinclair is mentioned by Kyle Wick, who said Sinclair instructed him to hold open a door. Sinclair can be seen in Earth Monitoring Station alongside Jaha and a few others after The Ark suffered catastrophic failure. Sinclair and the others, are running out of oxygen, and decide that before they die they will supply as much power to as many stations as possible. However, Kane and a few others come in and rescue them, giving them oxygen masks. When Sinclair and the others are brought to their feet, Sinclair and Wick explain how there might be some survivors who might have been thrown off of the ship by Diana Sydney, as they state there are apparently some stations close to the Exodus Ship launch area which are still intact.

In We Are Grounders (Part 1), Sinclair can be seen in Earth Monitoring station working with Kane to figure out a solution to save The Ark. However, Sinclair sees there is no hope and requests to go home to his wife. Jaha then walks into the room and asks Sinclair if they use The Ark's thrusters to get to the ground, how much will be destroyed, which Sinclair tells him 95%. Sinclair is then instructed to locate the 5% that will survive and everyone will be stationed there in order to make it to the ground. Sinclair opens the blueprints given to him by Jaha and gets straight to work.

In We Are Grounders (Part 2), Sinclair explains the to the inhabitants of the Ark the workings and possible consequences of using the Ark to return Earth, explaining that some parts of the Ark will be destroyed when entering the atmosphere along with the people inside. After everyone is strapped in for the descent, Sinclair tries to remotely separate the Ark's stations from the Earth Monitoring Station with explosives so they can use the Ark's thrusters to blast them towards Earth, but the remote detonation fails and Sinclair informs Jaha that someone will have to manually detonate the bombs therefore someone must stay behind. Kane volunteers and is ready to leave. Sinclair tells Abby that he will have one week of air left two at the most. The Ark suddenly shakes as the bombs explode as Jaha has gone to the Earth Monitoring Station to manually detonate the bombs. The Earth Monitoring station separates from the other stations, which start heading for Earth as the thrusters activate. Sinclair survived the crash landing with Abby and Kane and is now on Earth with them.

In The 48, Sinclair first appears along with Abby and the rest of the survivors of Mecha Station's crash after Kane shoots and kills Tristan. Kane then has a short discussion with Bellamy and Finn, before ordering Sinclair to take Sterling, Monroe, and majority of the surviving adults back to Alpha Station. Later, when Kane returns to the crashed station, he discovers that Sinclair has named their new home "Camp Jaha". Sinclair then says that there has been no word from Jaha and calls Kane the new Chancellor.
 * -|Season Two =

In Many Happy Returns, Sinclair checks the fence that surrounds Camp Jaha and confirms that it is now active. He warns everyone to stay away from it and goes to find Raven Reyes. He instructs her to get working on a radio beacon so that they can make contact with any other Ark stations who made it to Earth.

Later, after Raven and Wick have set up a signal balloon, Sinclair compliments them on the idea. However, Major Byrne then appears and shoots the balloon down and tells them that Grounders can use it to pin point there exact location.

In Human Trials, Sinclair is present at a discussion about Mount Weather. He says that he doesn't wish to seem uncaring, but that the 47 Delinquents appear to be in no immediate danger and that they have plenty of time to come up with a plan to free them.

In Spacewalker, he is seen in flashbacks telling Raven that she got her Zero G certification and congratulates her. Raven tells him that she failed the physical but he tells her that he saw her test scores and overruled the rejection.

In Survival of the Fittest, Sinclair arrives at the dropship with many others. He cheerfully greets Jaha and then departs back to Camp Jaha as Thelonious and others embark on a journey to the City of Light.

In Coup de Grâce, Abby mentions that Sinclair gave her a letter from Jaha saying that he left with twelve others for The City of Light.

In Resurrection, Sinclair arrives at Tondc with Jackson and a group of Arkers. He explains that they saw the missile blast from Camp Jaha and that they've come to help out the Grounders affected.


 * -| Season Three =

Physical Appearance
Sinclair has frizzy black and gray hair. He also has brown eyes.

Personality
Sinclair acts mostly neutral and is loyal and formal towards his superiors. Unlike many characters, Sinclair has shown little to no personal feelings/views in regard to peace or war with the Grounders.

Relationships

 * -| Marcus Kane =

Marcus Kane
Sinclair and Marcus have a professional relationship built on mutual respect.


 * -| Thelonious Jaha =

Thelonious Jaha
Sinclair and Jaha share a professional relationship. Sinclair listens to Jaha and goes by all of his orders without question.


 * -| Abigail Griffin =

Abigail Griffin
Sinclair and Abigail share a professional relationship. They work together in the Monitoring Station. Sinclair watches the screen which shows the status of the Delinquents. He helps Abigail figure out why the delinquents' wristband signals stop transmitting.

Quotes

 * Kane: "What if we jettison sections 3 through 7?"
 * Sinclair: Sir, we've run every scenario twice. There are no more options. I would really like to be with my wife".
 * — in We Are Grounders (Part 1)


 * Sinclair: "Ladies and gentlemen the fence is hot. Trust me you do not want to go near it".
 * — in Many Happy Returns


 * Sinclair: "We saw the missile, heard the blast, figured you could use some help."
 * — arriving in Tondc to help the victims of the bombing in Resurrection

Notes and Trivia

 * In "We Are Grounders (Part 1)", we learn that he has a wife.