| “ | I lost someone special to me, too. Her name was Costia. She was captured by the Ice Nation, whose queen believed she knew my secrets. Because she was mine they tortured her, killed her, cut off her head. | ” |
| — Lexa to Clarke [src] | ||
Costia was a Grounder from the Woods Clan and Lexa's girlfriend until Costia's death at the hands of the Ice Nation's queen.
Costia was first mentioned in Remember Me when Lexa told grieving Clarke of her own past love. Her death significantly impacted Lexa's views on love and emotions in her role as Commander.
Early Life
Little is known about Costia's early life except that she met, befriended, and eventually fell in love with Lexa.
Throughout the Series
In Remember Me, Lexa tells Clarke about Costia after the funeral for the massacred victims of Tondc and Finn Collins. Lexa mentions that she loved someone by the name of Costia and the Ice Nation Queen kidnapped her, tortured her, and cut off her head because they thought that she knew Lexa's secrets and because she was hers.
In Bodyguard of Lies, Clarke mentions Costia when she is telling Lexa she is weak for hiding her feelings and that she is still haunted by Costia's death.
In Watch the Thrones, Lexa kills Nia in retribution for the destruction of Mount Weather and challenging Lexa's throne. Though not directly mentioned, Nia's death also avenges Costia.
Appearances
| Season Two | |
|---|---|
| Episode | Appearance Status |
| The 48 | Absent |
| Inclement Weather | Absent |
| Reapercussions | Absent |
| Many Happy Returns | Absent |
| Human Trials | Absent |
| Fog of War | Absent |
| Long Into an Abyss | Absent |
| Spacewalker | Absent |
| Remember Me | Mentioned |
| Survival of the Fittest | Absent |
| Coup de Grâce | Absent |
| Rubicon | Absent |
| Resurrection | Absent |
| Bodyguard of Lies | Mentioned |
| Blood Must Have Blood (Part 1) | Absent |
| Blood Must Have Blood (Part 2) | Absent |
| Season Three | |
|---|---|
| Episode | Appearance Status |
| Wanheda (Part 1) | Absent |
| Wanheda (Part 2) | Absent |
| Ye Who Enter Here | Absent |
| Watch the Thrones | Absent |
| Hakeldama | Absent |
| Bitter Harvest | Absent |
| Thirteen | Mentioned |
| Terms and Conditions | Absent |
| Stealing Fire | Absent |
| Fallen | Absent |
| Nevermore | Absent |
| Demons | Absent |
| Join or Die | Absent |
| Red Sky at Morning | Absent |
| Perverse Instantiation (Part 1) | Absent |
| Perverse Instantiation (Part 2) | Absent |
Notes and Trivia
- She was named after Anacostia in Washington DC.
- Her status as Lexa's deceased lover makes her one of the first LGBT characters in The 100 canon.
- As for Season 3, she is one of six known LGBT characters, the others being Clarke, Lexa, Niylah, Miller, and Bryan.