He has the hindquarters, legs, and horns of a goat, in the same manner as a faun or satyr.
When Timmy Turner sabotaged Chip Skylark's concert at the Dimmadome by having Vicky capture him and hold him hostage, the crowd at the concert began to get wild and angry which causes Chip to be hurt his own guilt. While Timmy was figuring out a way to free Chip from Vicky due to her being in love with Chip, he sent Cosmo to distract the crowd until Timmy can get Vicky to not like Chip anymore. Cosmo poofed up a band called "The Fairies", and Pan was one of the members, whose instrument was playing the pan flute. He got pelted by tomatoes along with his band members until Timmy arrived with Chip. He and the rest of his band then participated in the Icky Vicky song. He had no lines in the episode, and has not appeared since.