|Birthdate:|| April 4, 1984|
April 28, 1984
|Manner of Death:||Assassinated by Helena|
|Died:||April 11, 2012|
|Family:|| Leda clones (sisters/genetic identicals)|
|Portrayed by:||Tatiana Maslany|
|First appearance:||"Instinct" (photo)|
Little is known about her, besides that she is from Rome, Italy.
She is presumed to be dead before the start of the series as her information is found in the briefcase Katja brought with her as proof that someone is killing them off. In "Effects of External Conditions", during the clone count, Felix says that the psycho killer clone had killed four others out of nine, presumably Katja and the three others she knew in Europe. Felix probably knew this from previous information shared by Cosima.
In "Entangled Bank", her picture in Cosima's clone chart has a red X on it with the date of her death, confirming her status as deceased.