Tamo Lan was a male Carosite field medic who served with the Alliance to Restore the Republic during the Galactic Civil War. After leaving his homeworld, Carosi XII, following an incident that involved him killing a slaver who threatened one of his patients, Lan joined the Alliance and served on the planet Baes Logia and the moon Yavin 4 before being selected to join Shroud Team, an all-alien unit of Foster Agents led by Jin lieutenant Dutra Zeneta. Foster Agents were responsible for returning stranded field agents to the Alliance, and Shroud Team operated out of Corint City on the planet Pirik. Lan served as the team's medic, while also training the Aqualish female Gondara—the sister of his deceased best friend, Karlon—to be his assistant.