Ana Lorite (34) and Sergio Aguilar (32) have been travelling the world for the past six months with their company Naranjarte, which mixes the arts of puppetry and classical circus.
During the Fringe they have been walking around the city introducing their puppet Paco to pedestrians.
Lorite said they received a warm reception from the people they met.
They would meet someone, start with ball tricks and Paco would offer balloons to children.
''When he finishes he bows and he's a little bit cheeky and asks for money.
''He's a little bit grumpy. I'm always trying to help him, but he doesn't allow me to.''
They are also performing another show called The Orange Box in the window of the Fringe office at nights.
This involved an 11-string marionette which Lorite carved herself.
She studied for a master's in puppetry at the London School of Puppetry and Aguilar was trained in circus studies.
She said they developed the skills in Madrid, but decided ''let's dream bigger''.
''So we quit our jobs and contacted a lot of schools.''
At the schools, they used their talents as a method of learning new languages.
Lorite was a primary school teacher in Spain and wrote her master's thesis on the use of puppetry in English language teaching.
''I think puppets are good for learning languages because they're so engaging. People want to interact with the puppet.''
The Orange Box will be performed at the Short Black Box at the Fringe office on Princes St at 7pm today and 7pm and 9pm tomorrow.
