Updated through S2E10
Patricia Arquette plays Harmony Cobel, who ran the severed floor with cult-like devotion to Kier and secretly surveilled Mark's outie as his neighbour "Mrs. Selvig". Season 2 reveals she grew up in the dying company town of Salt's Neck and invented the severance procedure — credit for which Lumon stole.
What's confirmed in canon
S1E1Cobel manages the severed floor and, as "Mrs. Selvig", secretly watches Mark's outie.
S2E1Ousted and replaced by Milchick, Cobel goes off-grid.
S2E8"Sweet Vitriol": in Salt's Neck, it's revealed Cobel invented severance — the notebook Lumon claimed as its own is hers.
S2E10Cobel helps Mark understand what Cold Harbor is — that the numbers are the building blocks of Gemma's mind.
Where the community lands
Cobel flips from antagonist to wild card once "Sweet Vitriol" (S2E8) reveals she is severance's true author. Cast out by Lumon, her knowledge makes her the most dangerous free agent in the show — an enemy of the company that erased her, and an uneasy ally to Mark.
Still open
Q1Will Cobel expose Lumon, or try to reclaim severance for herself?
Q2How much of the procedure only she understands?
Q3Ally or rival to Mark and Gemma in Season 3?
Connected entities
Connections graph
Have a theory about Harmony Cobel?
Lock in a prediction, weigh in on the open theories, or get an alert the moment new canon lands.
Follow Harmony Cobel
Get an alert when Severance confirms or debunks a theory about Harmony Cobel.