Ahmad Alhendawi (أحمد الهنداوي) (born 20 May 1984) currently serves as the Secretary-General of the World Organizations of the Scout Movement, the youngest in the history of the organization.
 Prior to this, he was the first-ever United Nations Secretary-General's Envoy on Youth, appointed by the Secretary-General of the United Nations on January 17, 2013 as the youngest senior official in the history of the United Nations.
 He supported UN Secretary-General Ban Ki-moon in addressing his thematic priority of working with and for young people as part of his current Five-Year Action Agenda.
Stephane Dujarric de la Rivière (born 20 August 1965) is the Spokesperson for the United Nations Secretary-General António Guterres.
 He was appointed to this position on 19 February 2014 by the previous Secretary-General of the United Nations, Ban Ki-moon .
 Dujarric had previously served as Spokesman for United Nations Secretary-General Kofi Annan from 2005 to 2006 and then Deputy Communications Director for Secretary-General Ban Ki-moon from 2006 to 2007.
Karin Landgren (born 1957) is a Non-Resident Fellow at the Center on International Cooperation, New York University.
 She was Special Representative of the Secretary-General (SRSG) to Liberia and head of the United Nations Mission in Liberia (UNMIL) 2012-2015, and is the first woman to have headed three UN peace operations.
 Previously, she served as SRSG to Burundi and Head of the United Nations Mission in Burundi (BNUB), and as Representative of the Secretary-General to Nepal and head of the United Nations Mission in Nepal (UNMIN).
 Prior to this, she worked as the United Nations High Commissioner for Refugees (UNHCR) Representative in Bosnia-Herzegovina, Eritrea, and Singapore, among other postings, and served as the first head of child protection for the United Nations Children’s Fund (UNICEF).
Michael Møller, born 9 November 1952 (Denmark), is the Under-Secretary-General of the United Nations and current Director-General of the United Nations Office at Geneva (UNOG).
 He is also the Secretary-General of the Conference on Disarmament and the United Nations Secretary-General’s Personal Representative to the Conference.
 He was appointed to these roles by Secretary-General Ban Ki-moon in November 2013.
 He was reappointed by Secretary-General António Guterres in February 2017 for another year.
 Michael Møller has over 38 years of experience as an international civil servant in the United Nations System, serving in different roles in New York, Iran, Mexico, Haiti and Geneva.
 Prior to his tenure as Director-General, he was the Executive Director of the Kofi Annan Foundation from 2008 to 2011.
The Secretary-General of the United Nations (UNSG or just SG) is the head of the United Nations Secretariat, one of the six principal organs of the United Nations.
 The Secretary-General serves as the chief administrative officer of the United Nations.
 The role of the United Nations Secretariat, and of the Secretary-General in particular, is laid out by Chapter XV (Articles 97 to 101) of the United Nations Charter.
George Mark Malloch Brown, Baron Malloch-Brown (born 16 September 1953) is a former UK government minister (2007 – 2009) and United Nations Deputy Secretary-General (2006), as well as development specialist at the World Bank and United Nations (1994 – 2005), and a communications consultant and journalist.
 He was Minister of State in the Foreign and Commonwealth Office of the British government with responsibility for Africa, Asia and the United Nations (June 2007 - July 2009).
 Following his appointment to government, Malloch Brown was created a life peer on 9 July 2007 as Baron Malloch-Brown, of St Leonard's Forest in the County of West Sussex (his title is hyphenated but his surname is not).
 Malloch Brown was previously at the World Bank (1994–1999), the Administrator of the United Nations Development Programme (1999–2005) and briefly United Nations Deputy Secretary-General (April to December 2006).
 He had previously worked at the United Nations High Commissioner for Refugees (1979–1983).
 He is also a former journalist for "The Economist", development specialist, and communications consultant.
 He has served as Chair of the Royal African Society, among other non-governmental and private sector roles, such as membership of the Executive Committee of the International Crisis Group.
Trygve Halvdan Lie (] ; 16 July 1896 – 30 December 1968) was a Norwegian politician, labour leader, government official and author.
 He served as Norwegian Foreign minister during the critical years of the Norwegian government in exile in London from 1940 to 1945.
 From 1946 to 1952 he was the first Secretary-General of the United Nations.
 Lie earned a reputation as a pragmatic, determined politician.
United Nations Secretary-General selection is the process of selecting the next Secretary-General of the United Nations.
 To be selected as Secretary-General, a candidate must receive the votes of at least 9 members of the United Nations Security Council, with no vetoes from permanent members.
 The Secretary-General is then appointed by a majority vote of the United Nations General Assembly.
Erik Andreas Colban (18 October 1876 – 28 March 1956) was a Norwegian diplomat.
 Colban had many important roles in Norwegian diplomacy; especially being named to the post of Norwegian Ambassador in London before and during the Second World War.
 Colban also worked with the League of Nations and the United Nations where Norwegian Trygve Lie served as the Secretary-General of the United Nations.
Georg Charpentier (born in El Salvador, on 11 August 1956) currently serves as United Nations Deputy Special Representative and Resident Coordinator in Libya.
 He was appointed to this position by the United Nations Secretary-General Ban Ki-moon on 19 September 2011.
 Previously, he was the Deputy Special Representative of the United Nations Secretary-General for Côte d'Ivoire.
 In this capacity, he is responsible for Humanitarian Coordination, Recovery and Reconstruction, Resident Representative of the United Nations Development Programme (UNDP), Resident Coordinator of the United Nations System in Côte d'Ivoire and Humanitarian Coordinator.

Question:  Erik Andreas Colban worked with the Secretary-General of the United Nations who earned a reputation as what?
Answer: a pragmatic, determined politician