Planet YZ

"Let's declare war on him!" - Arguments and Wars Planet YZ was a planet, who only appeared in Planetballs 2.

History
He formed in A New Member in Greeney's Family, from the collision of Planets Y and Z. He would get taken over by aliens later.

In the first invasion, in Revenge, the aliens who took over him were killed by Neptune and Yellow. He was then revived by Gold. He got occupied again, but Neptune killed the alien who took over him. Then he got revived by Gold.

In A Total Mess, when Neptune said that why new planets keep entering the solar system, Planet YZ commented that they are small.

He was one of the planets who were disappointed at Jupiter in Arguments and Wars.

In The Great War, he joined the defensives, and surrendered. He was colonized by Neptune and Sathernium. Nearing the end of the episode, he died.