Costa

Major Costa is a minor recurring character in the first, second, third, and fourth seasons.

Early Life
Not much is known about his early life except he was born on the Ark and later became a member of the guard.

Throughout the Series
In Contents Under Pressure, Costa aids Jaha in controlling the crowd which is about to attack Kane. Later he is standing sentry during the general assembly in which Jaha reveals the truth about the 100.
 * -|Season One =

In Day Trip, Costa is one of the guards to assist Kane in arresting the traitorous Shumway.

When the Ark is brought to the ground Costa was on Mecca Station.

In The 48, Costa is one of the guardsmen with Kane when they kill the grounder leader Tristan and find Finn, Bellamy, Monroe, and Sterling. Costa then travels with Kane, Abby, Finn, Bellamy and 5 other guardsmen to investigate the status of the dropship. When they find Murphy and Raven, Costa helps carry Raven’s stretcher. Once at Alpha station, Costa escorts Bellamy inside.
 * -|Season Two =

In Inclement Weather, Costa and Major Byrne bring Murphy into the holding cell. When they hear shots fired he runs outside with the others to investigate. Later, when they hear screaming, Costa follows Kane into the woods and helps cut down some guards who have been crucified by grounders.

In Reapercussions, Costa is one of the guards to escort the captured grounder Rivo through Camp Jaha and protect him from the mob. Later, he escorts Abby to her punishment and watches as she is shock lashed.

In Human Trials, Costa and Denby are the two guards helping Kane to escort Rivo to negotiate a truce with the grounders. After the captured grounder asks for Kane to untie him in Trigedasleng, Costa says that Rivo doesn't understand a word they're saying. Kane replies by saying that Rivo's apparent inability to speak English is just a tactic he's using so that the Arkers don't expect him to tell them anything. Once the group reaches the boundary where they must disarm before proceeding, Kane orders the two guards to return to camp, which they do so reluctantly.

Back in Camp Jaha, in Spacewalker, Costa is seen protecting Finn from the mob of Arkers who want to give him up to the grounders. He is one of two guardsmen who keep watch over Jaha and Raven in their makeshift cell and later, when Abby tells the grounders they can’t take Finn, Costa stands armed ready with Major Byrne and other guardsmen in anticipation of a grounder attack. After Kane returns, Costa escorts Jaha to Abby to discuss their next move with Kane.

In Survival of the Fittest, Costa stands guard as Kane greets Indra and her warriors at Arkadia. Later when the grounders are cooking their food, Costa is seen standing next to Kane.

In Bodyguard of Lies, after the acid fog has been disabled by Bellamy, Costa marches through the forest to the doors of Mount Weather with the Skaikru/Coalition Army.

In Blood Must Have Blood (Part 1), Costa helps another guard to move the drill which Monroe just finished using to bore through Mount Weather’s main door. After Lexa betrays the Sky People and announces a retreat, Costa leaves with his people to head back to Arkadia.

In Ye Who Enter Here, Costa is one of the guards escorting Kane and Acting Chancellor Abigail Griffin to Polis. Once at the city limits of Polis, the group dismount their vehicle and prepare to go ahead on foot once Indra's warriors have rendezvoused with them. Costa hooks a med kit to his belt but is told by Kane that he can't take it into the capital because it came from Mount Weather and would offend the grounders. When in Polis, Costa continues to escort the Chancellor and Kane as well as taking in the sights and talking with the locals.
 * -|Season Three =

After the City of Light has been destroyed, in Echoes, Major Costa brings a group of Sky People to the Flamekeeper's temple to lead them out of Polis through a secret tunnel. He meets Kane and tells him he has 10 guards at the temple entrance and offers to stay in the city. Kane declines his offer and tells Costa to lead the other Sky People back to Arkadia.
 * -|Season Four =

Appearances

 * Ahenkorah was not credited in season one and season two, except for the episode "Human Trials".

Notes and Trivia

 * Kane mentions Costa's rank in "Echoes" when he says, "You lead them home, Major."

Gallery

 * -|Season One=