Updated through S3E7
Steve Zahn plays Solo, who as a boy sealed himself inside the IT vault of Silo 17 when its population went outside and died. Juliette meets him in Season 2 - a traumatised mirror of what Silo 18 could become.
What's confirmed in canon
S2E3Introduced as the sole survivor of Silo 17, sheltering behind the IT vault door for ~30 years.
S2Was tied to Silo 17's IT and ordered to seal the vault and let no one in; the name "Solo" comes from a remark he misheard as a boy.
S3E6Silo 17 becomes the season's active mission: Juliette wants a team (Lukas and Patrick) sent to rescue its children and learn how Solo/Jimmy capped the Safeguard pipe. That makes Solo's buried knowledge - and the radio channels Walker is scanning - suddenly load-bearing for Silo 18's survival, not just a cautionary backstory.
S3E7Silo 17 turns from rescue target into a live information source: Kennedy reaches it and radios that the children are alright. That contact is what lets Silo 18 abort the Judicial bombing - the Silo 17 team can now locate how its Safeguard pipe was capped. Solo's memory of people "dying outside" after the poison "came back" reframes as evidence of the external kill layer, not just the internal pipe.
Where the community lands
Solo is the show's living proof that a silo can die completely. Fans watch him as both a warning and a source: he was close to Silo 17's IT and may hold pieces of the truth even he does not understand.
Still open
Q1Can Silo 17 locate the capped Safeguard pipe and relay the fix to Silo 18?
Q2Did Solo and the children help Kennedy survive and make contact?
Q3Did Silo 17's people die from the internal poison or the external surface defense?
Connected entities
Connections graph
Have a theory about Solo / Jimmy Conroy?
Lock in a prediction, weigh in on the open theories, or get an alert the moment new canon lands.
Follow Solo / Jimmy Conroy
Get an alert when Silo confirms or debunks a theory about Solo / Jimmy Conroy.