ABC is expanding the 9-1-1 universe again with its 9-1-1: Nashville spinoff - but who makes up the cast? The 9-1-1 world originated with the OG series, which premiered on Fox in 2018. It followed the professional and personal lives of Los Angeles first responders with Angela Bassett, Peter Krause, Aisha Hinds, Oliver Stark, Connie Britton and Kenneth Choi leading the show. Fox canceled the series in 2023, allowing ABC to renew the show that is currently still airing on the network.