Does anyone know what typeface served as a basis for Duendes? Thanks in advance!

Rubert  Suggested by jerseygirl 

1990's release from Unifonts, which seems to have closed up shop in 2019.

http://web.archive.org/web/20150516232410/http://www.unifonts.com/r_pages/rubertbold.htm

Unifonts catalog here:
http://www.klingspor-museum.de/KlingsporKuenstler/Schriftdesigner/DeCastro/VDeCastro.pdf

Aawww… :-/ Thank you anyway for the answer, jerseygirl.