Sabu is an alien from the planet Jupiter, always faithful to Chacha and provides the physical strength in time of need. He is huge and strong, about 50 feet tall. Though his size has been highly inconsistent throughout the comic series. In some comics he is able to increase his size. In certain other stories he also comes out only when Chacha Chaudhary rubs a lamp (much like Aladin). He wears only a wrestler's "kachha" (briefs), a pair of ear-rings and a pair of gum-boots. But in some comics, Sabu was shown wearing slim fit green trousers.