To reiterate neither Ekko or Emi knew they were Mafia at the start. If Fuji and Soul died before they were "raised", Ekko became town and another mason (with Ryne),
@QueenEmilia would have become
Zenos yae Galvus, a Savage Indie that had to hunt and kill three marks, the last one being Levia Daedalus (first two had to be one mafia one town). Gaius was recruited Night 2 because of a condition where if the lynch stop was used while conversion was in play but hadn't happened, they'd get to send a message directly to Gaius. The conversion was also voluntary on the part of Gaius.