This episode features Richard Horvitz as Zim, in the pilot episode, Zim is played by Billy West.
In the pilot episode, Zim is played by Billy West. This episode features Richard Horvitz as Zim.
This episode features Richard Horvitz as Zim. In the pilot episode, Zim is played by Billy West.
This episode features Richard Horvitz as Zim. In the pilot episode, Zim is played by Billy West.