|Manner of Death:||Killed by Rachel Duncan to carry out an autopsy.|
|Affiliation:||Artist / Musician|
|Hair color:||Dyed blue|
|Distinct feature/s:||Hair styled as a mohican.|
|Family:|| Leda clones (sisters/genetic identicals)|
|Portrayed by:||Tatiana Maslany|
|Only appearance:||"Gag or Throttle"|
|} Miriam Johnson was a LEDA clone who was among the first monitored by Dyad to develop the same respiratory illness that later affected other clones including Cosima Niehaus and Katja Obinger. She was given the tag 528M32 to identify her among the clones.
When Rachel Duncan was younger (pre-season 1), she learned that 528M32 had developed uterine growths. Rachel became concerned that she could also be affected by the same disease and "took initiative" and arranged for the death of Miriam in order to perform an autopsy. The results of the autopsy showed that the growths had spread. Aldous Leekie was shocked at the drastic action that Rachel had taken, noting Miriam's artistic and musical talent, but Rachel coldly cited that Miriam was homeless and her adoptive mother was a drunk.