 In 1949   he created Condorito, his most famous character, taking the idea from the condor of the Chilean coat of arms.Over the next sixty years Rios contributed cartoons to a great number of publications, including "El Pingüino", "Ganso", "Pobre Diablo", "Can Can", "Pichanga", "El Saquero", "El Peneca", and branched out into other forms of illustration as well.Rios died of cancer in 2000 at the age of 88.