Final answer:
In 'Avatar: The Last Airbender', Iroh and Zuko take on the aliases 'Mushi' and 'Lee' respectively, while hiding in the Earth Kingdom to blend in and avoid detection as fugitives from the Fire Nation.
Step-by-step explanation:
In the animated series Avatar: The Last Airbender, the characters Iroh and Zuko take on aliases while they are hiding in the Earth Kingdom. Iroh adopts the name 'Mushi', which he uses to pass as a simple tea shop owner. Zuko, on the other hand, takes on the name 'Lee', a common Earth Kingdom name, to blend in and avoid detection as the exiled Prince of the Fire Nation. While using these aliases, they attempt to live normal lives among the Earth Kingdom citizens, with Zuko even working in a local tea shop that Iroh eventually comes to own.