Athena

Athena is the leader of the Thanatos Guild and a former member of the League of Assassins.

Early life
Athena joined the League of Assassins when Nyssa was still a child. During Malcolm Merlyn's reign she was his second-in-command.

Becoming leader of the Thanatos Guild
Sometime after Malcolm became Ra's al Ghul; he created a guild of warriors known as the Thanatos Guild, a group that is separate from the League of Assassins, Athena was one of his many loyalists that was recruited into the guild, however, following Malcolm's death on Lian Yu; Athena assumed leadership of the Thanatos Guild.

Personality
Like all assassins, Athena is cold, cruel and ruthless, but she does have a sense of honor; as Athena has stated that she can be merciful when she gets what she wants.

Abilities

 * Peak of human physical condition: As an assassin, Athena is in top physical condition. She is strong enough to break one of Thea Queen's ribs with little effort by simply kicking her.
 * Master combatant/Martial artist: As a former member of the League of Assassins, Athena is a master hand-to-hand combatant and martial artist, as she was able to best Nyssa al Ghul, who is a master hand-to-hand combatant and martial artist in her own right, and defeat Thea Queen relatively easily.
 * League of Assassins training: Athena has gone through the training all League members do. She possessed skills in combat, assassination and stealth.
 * Master archer: As a former member of the League of Assassins, Athena is a master archer.
 * Master swordswoman: As a former member of the League of Assassins, Athena is a master swordswoman, as she was able to best Nyssa al Ghul, who is a swordswoman in her own right, with little effort.
 * High-level intellect/Master tactician/Leader: Athena is highly intelligent, as the leader of the Thanatos Guild, she is a highly skilled tactician and a very capable leader.
 * Indomitable will/High pain tolerance/Master survivor: A driven and determined person, Athena is nearly fearless and almost never gives up under most situations. Athena also has an incredible tolerance for pain and great survival skills; as she was able to survive having an arrow shot straight into her stomach, she then removed the arrow while barely flinching.

Equipment

 * Customized hunting arrows: Athena carries a number of black arrows with her at all times. These arrows feature a special red fletching and tip.
 * Customized PSE Chaos AD Compound bow: Athena wields a personal compound bow, similar to that of Malcolm Merlyn. It is possible that this bow is the signature bow to the League of Assassins.
 * Thanatos Guild suit: Athena wears a protective suit, used by the members of the Thanatos Guild, to hide her identity from his victims. It is unknown what materials it is made out of, with the exception of kevlar; it is also similar in appearance to the League of Assassins suits.
 * Sword: Athena can proficiently wield a sword. It is unknown what type of sword it is.
 * Quiver: Athena wears a black quiver to keep arrows on her back at all times.

Season 6

 * "The Thanatos Guild"

Trivia

 * Athena has a scar across the left side of her face; as a sign of her determination.

Behind the scenes

 * In the DC comics, Celia Kazantkakis also known as Athena is a Batman villain that is also the leader of a villainous organization and is very dangerous despite her age. Like the Athena on the show, she was once very close with a parent of someone who would go on to become her enemy; Batman's mother Martha Wayne in the DC comics and Thea Queen's father Malcolm Merlyn on the show.