From the Wookieepedia article linked above;

Muuns were a thin, tall humanoid species from the mineral-rich planet of Muunilinst, which was also the headquarters of the InterGalactic Banking Clan, the largest banking organization in the galaxy. Muuns were known throughout the galaxy for their excellent financial and mathematical skills, and, seeking economic stability, the Empire left Muuns exempted from their wide-spread non-human persecution, in order to utilize Muuns and their economic finesse.

San Hill, Chairman of the InterGalactic Banking Clan and member of the Confederacy of Independent Systems Council.

The Korx, of course.

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