The first person to hold this role was Ramon Coen as part of the Toi administration. Coen was responsible for negotiating the Perry Line Pact, and under an agreement known as the Coen Compromise, agreed to make the Xi'an settlement on Oya III an enclave within human territory.
The ambassador under Kelos Costigan was Yanna Coso, who was responsible for negotiating the Human-Xi'an Trade Initiative. T.yi was nominated for the role by Laylani Addison, but rejected by Congress.
- This Day in History: The Perry Line Pact. Spectrum Dispatch - Comm-Link. Retrieved 2021-08-18
- News Update: Congress Now, September 2943. Spectrum Dispatch - Comm-Link. Retrieved 2022-12-03
- Congress Now: Vote on Ambassador to the Xi'an Empire. Spectrum Dispatch - Comm-Link. Retrieved 2021-08-18