Fidge Tadrazan, a youthful Biituian, became friends with R2-D2 and C-3PO when they encountered the Great Heep on the planet of Biitu.
Chubb, a reptilian creature, was both his pet and his close companion. He assisted the droids in the mission to save their master, Mungo Baobab, from the Imperials who were stationed on the planet to keep watch over the Great Heep. Once Mungo was freed, they collaborated to eliminate the Great Heep and expel the Imperials from Biitu.