The Spanish Explorers are two people who only appeared in "Whale Times". They wear spanish exploration uniforms and live inside a giant squid named Glubbie. The young one looks like Flapjack. They, like Flapjack and K'nuckles, were kidnapped by Harvey and forced to work at a laundromat island. They were reunited with Glubbie at the end.
The adult seems very serious, and the boy seems very energetic.
It was also noted that the adult explorer has a nose resembling Captain K`nuckles' nose.