Jaguar is a strange man who likes to play the recorder. He and Piyohiko are roommates in Gari Dormitories, where he runs a recorder class. He is a musical genius, able to play any instrument with astounding skill. His performances can conjure up vivid images in people's minds. Jaguar can even make his recorder sound like a guitar if he wants.

Jaguar appears to have no purpose in life but to teach his recorder class, although his lessons are so lazy that it's the same as doing no work at all. However, he is strangely transcendent and nothing at all seems to truly bother him. He always wins his battles, and can always convince people to see his way. He contrasts Hammer, who has the same lazy lifestyle but is always the loser.

Later on, it is revealed that Jaguar is one of several children brainwashed in an experiment to create a band so amazing that it could shake the world, and bring world peace using the power of music. The laboratory where this experiment took place was called the Hotel Riverside Laboratory, also known as "Softcream". Jaguar's "father", one of the scientists at the lab, opposed the brainwashing and released all of the children.

(Source: Wikipedia)