[2] After going 6 amateur-fights 2001–2004, Troéng started doing MMA as a professional in 2005 mostly fighting in smaller promotions in Sweden and other parts of Europe.
Despite all this, by 2012 he had racked up a record of 15-4-1 (11-1-1 in his last 13 fights) with a victory over UFC veteran Mark Weir and fights against notable opponents like Mamed Khalidov, Lucio Linhares, former UFC title challenger Thales Leites and Pride veteran Daniel Acácio.
[9][10] Troéng fought Rafael Natal on September 4, 2013, at UFC Fight Night: Teixeira vs.
[11] Early in the second round Troeng was knocked down by a huge right hand followed up by some ground and pound from Natal, but was able to survive and recover from it.
Troéng faced Krzysztof Jotko on October 4, 2014, at UFC Fight Night: Nelson vs.
[19] Troéng has a master's degree in Engineering physics and he is still working part-time doing research in mathematics, at the University of Umeå.
The first event under the organisation's new promotion, and the fifth in total count, took place on November 28, 2015, at Battle of Botnia 2015, in Troéng's hometown of Umeå.