Gaspar was a Muppet representing a red-haired human, somewhat resembling Guy Smiley. He always showed a smile on his face. Apparently, Gaspar owned a market and offered an adult counterpart to child-like Bluki, without reaching the intellectual extremes of Bubo. When he laughes out loud, it sounded similar like Ernie's laugh.
The name "Gaspar" is not usual in Spain, being mainly representative of one of the three Wise Men bringing presents to the Holy Child Jesus (in English he is called Casper).
Gaspar never reached the peak of popularity of other Spanish Muppets from previous periods of Barrio Sésamo.