The Secretary-General of the United Nations (UNSG or SG) is the head of the executive branch of the United Nations (the Secretariat) and is the head of state and government of the UN, and the commander-in-chief of the United Nations Navy.

Role[edit | edit source]

The Secretary-General is the chief executive of the United Nations. The powers of the office are similar to that of the President of the United States, considering the similarity between the two governments. They are the Chief-Administrator of the UN, and the head of state and government. The second-highest official in government is the Deputy Secretary-General.

The Secretary-General is also the Commander-in-Chief of the United Nations Navy, having sole power over the UNN. While they need support from the United Nations Security Council, they can in practice order military attacks without further approval.

Because of their supreme importance in the government of the leading superpower of the Sol system and beyond, the SG of the UN is often regarded as the single most powerful individual in inhabited space.

List of Secretaries-General[edit | edit source]

This is a list of known Secretaries-General that have held the prime executive position within the UN government after or during 8 XTE.

No. Portrait Name Assumed office Left office
1 Esteban Sorrento-Gillis.jpg Esteban Sorrento-Gillis < 8 XTE 11 XTE
2 S04e10nancygaounsgcropped35m48s.jpg Nancy Gao 11 XTE 16 XTE
3 Avasaralarpgimage.jpg Chrisjen Avasarala 16 XTE (interim after the Bombardment of Earth) 17 XTE>
4  ⸻  Barry Li?[1] ~46 XTE incumbent

No. Portrait Name Assumed office Left office
1 Esteban Sorrento-Gillis.jpg Esteban Sorrento-Gillis < 8 XTE ? XTE (Resigned at end of UN-MCR War)
2 Chrisjen Avasarala.jpg Chrisjen Avasarala ? XTE ? XTE
3 S04e10nancygaounsgcropped35m48s.jpg Nancy Gao ? XTE ? XTE[2]
4 S05E08-SugithVarughese as DavidPaster 01.jpg David Paster ? XTE[3] ? XTE[4]
5 Chrisjen Avasarala.jpg Chrisjen Avasarala ? XTE ? XTE

History[edit | edit source]

The current acting Secretary-General is Chrisjen Avasarala, who ascended to office after a no-confidence vote was scheduled against David Paster following the resignation of several cabinet ministers - including Avasarala herself, Dahane, Yilmaz, and Cebotari - following Paster’s decision to authorize a UNN Strike on Pallas Station based on the recommendation of Admiral Felix Delgado.


  1. The Expanse Novel Persepolis Rising - Chapter 1: Drummer
  2. Season 5, Episode 4: "Gaugamela" ("Persistence vs. Perseverance" [15:30])
  3. Season 5, Episode 6: "Tribes" ("The face of the new Secretary General" [01:20])
  4. Season 5, Episode 9: "Winnipesaukee" ("Chrisjen lets go" [21:51])

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