Taxi Dragon is blue in the Dr. Slump manga, and dark green in the Dr. Slump anime. He is first seen in the chapter "Cute Delivery Boy From Hell", when he takes Chivil to Penguin Village. Taxi Dragon brings Chivil to the Norimaki Residence in the chapter "Chivil's Work", in which it is shown that he can fire a blazing flare from his mouth. Senbei Norimaki, Arale Norimaki, Gatchan, Chivil, and Oinkety Oink travel on Taxi Dragon's back form Penguin Village to Metropolis Island in the chapter "Metropolis Island: Part 1". Taxi Dragon brings Chivil to the Norimaki Residence again in the chapter "Witchy Gone Wild".
- The Taxi Dragon was the inspiration for Hire Dragon (known as "Icarus" in the dub), a character from the Dragon Ball Z anime that originally appeared in the third movie, Dragon Ball Z: The Tree of Might.