Cosima is a clone of american origin and works as a scientist. She helps Sarah to uncover the mysteries of their existence. Cosima also suffers from a respiratory illness. She falls in love with her monitor Delphine.
Appearances
Orphan Black
Main cast, played by Tatiana Maslany
- Episode 1x02: Instinct (Apr 6, 2013)
- Episode 1x03: Variation Under Nature (Apr 13, 2013)
- Episode 1x04: Effects of External Conditions (Apr 20, 2013)
- Episode 1x05: Conditions of Existence (Apr 27, 2013)
- Episode 1x06: Variations Under Domestication (May 4, 2013)
- Episode 1x07: Parts Developed in an Unusual Manner (May 11, 2013)
- Episode 1x08: Entangled Bank (May 18, 2013)
- Episode 1x09: Unconscious Selection (May 25, 2013)
- Episode 1x10: Endless Forms Most Beautiful (Jun 1, 2013)
- Episode 2x01: Nature Under Constraint and Vexed (Apr 19, 2014)
- Episode 2x02: Governed by Sound Reason and True Religion (Apr 26, 2014)
- Episode 2x03: Mingling Its Own Nature with It (May 3, 2014)
- Episode 2x04: Governed As It Were by Chance (May 10, 2014)
- Episode 2x05: Ipsa Scientia Potestas Est (May 17, 2014)
- Episode 2x06: To Hound Nature in Her Wanderings (May 24, 2014)
- Episode 2x07: Knowledge of Causes, and Secret Motion of Things (May 31, 2014)
- Episode 2x08: Variable and Full of Perturbation (Jun 7, 2014)
- Episode 2x09: Things Which Have Never Yet Been Done (Jun 14, 2014)
- Episode 2x10: By Means Which Have Never Yet Been Tried (Jun 21, 2014)
- Episode 3x01: The Weight of This Combination (Apr 18, 2015)
- Episode 3x02: Transitory Sacrifices of Crisis (Apr 25, 2015)
- Episode 3x03: Formalized, Complex, and Costly (May 2, 2015)
- Episode 3x04: Newer Elements of Our Defense (May 9, 2015)
- Episode 3x05: Scarred by Many Past Frustrations (May 16, 2015)
- Episode 3x06: Certain Agony of the Battlefield (May 23, 2015)
- Episode 3x07: Community of Dreadful Fear and Hate (May 30, 2015)
- Episode 3x08: Ruthless in Purpose, and Insidious in Method (Jun 6, 2015)
- Episode 3x09: Insolvent Phantom of Tomorrow (Jun 13, 2015)
- Episode 3x10: History Yet to Be Written (Jun 20, 2015)
- Episode 4x01: The Collapse of Nature (Apr 14, 2016)
- Episode 4x02: Transgressive Border Crossing (Apr 21, 2016)
- Episode 4x03: The Stigmata of Progress (Apr 28, 2016)
- Episode 4x04: From Instinct to Rational Control (May 5, 2016)
- Episode 4x05: Human Raw Material (May 12, 2016)
- Episode 4x06: The Scandal of Altruism (May 19, 2016)
- Episode 4x07: The Antisocialism of Sex (May 26, 2016)
- Episode 4x08: The Redesign of Natural Objects (Jun 2, 2016)
- Episode 4x09: The Mitigation of Competition (Jun 9, 2016)
- Episode 4x10: From Dancing Mice to Psychopaths (Jun 16, 2016)
- Episode 5x01: The Few Who Dare (Jun 10, 2017)
- Episode 5x02: Clutch of Greed (Jun 17, 2017)
- Episode 5x03: Beneath Her Heart (Jun 24, 2017)
- Episode 5x04: Let the Children and Childbearers Toil (Jul 1, 2017)
- Episode 5x05: Ease for Idle Millionaires (Jul 8, 2017)
- Episode 5x06: Manacled Slim Wrists (Jul 15, 2017)
- Episode 5x07: Gag or Throttle (Jul 22, 2017)
- Episode 5x08: Guillotines Decide (Jul 29, 2017)
- Episode 5x09: One Fettered Slave (Aug 5, 2017)
- Episode 5x10: To Right the Wrongs of Many (Aug 12, 2017)