Updated through S1E2
Yul Vazquez plays Petey, innie Mark's closest MDR friend, who escapes Lumon and undergoes illegal reintegration. He seeks Mark out on the outside to warn him, but the reintegration sickness kills him.
What's confirmed in canon
S1E1Petey disappears from MDR, kicking off the season; his innie's absence promotes Mark.
S1E2Reintegrated and failing, Petey contacts outie Mark to warn him about Lumon, then dies of the reintegration sickness.
Where the community lands
Petey is the warning label on reintegration and the show's inciting mystery. His death "proves" reintegration is lethal — a claim Reghabi and Mark then set out to disprove.
Still open
Q1Was Petey's death reintegration itself, or Lumon's sabotage of it?
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