When does Resident Alien return?

The alien language as seen in the series is actually Esperanto written in an invented right-to-left script. In July 2025, it was confirmed that the fourth season would be its last. It stars Alan Tudyk in the title role as an extraterrestrial sent to wipe out humanity.
An alien sent to wipe out humanity kills and takes on the identity of a vacationing physician. He is asked to do an autopsy on the town's doctor, who has died in unknown circumstances. He develops compassion for humanity over time and ends up having to defend them from other extraterrestrial threats.