Francesito is a Spanish child who appeared in the film Tintin and the Blue Oranges in The Adventures of Tintin series.
He was first seen as Pablito brought his young friends over to meet Tintin, and Haddock, to tell them about how Professor Zalamea, and Cuthbert Calculus. He knows French, as his mom is from France. Francesito translated Pablito's story about how Zalamea and Calculus were kidnapped.
When Francesito found Fernando, as he assaulted Pablito before, he called Pablito, and they ran to chase him down, but Fernando took a bus, and left. The boys asked where Fernando lives, and they confirmed that he lives at Red Donkey Hotel.
The children also used old pots to distract them when Tintin and Haddock returned to the Hacienda, to rescue Zalamea and Calculus.
And the children, also saved their friends from the hostage situation of Sadek el Benzine.
At the ending, Francesito, along with Pablito, went to Marlinspike Hall, to take a ceremonial photograph, in amusement.