Season 4 features some of the highest-rated and most influential episodes in the entire series. Futurama Season 4 Ratings - IMDb
While it is the fourth production season, Fox broadcast these episodes across its fourth and fifth seasons. Futurama - Season 4
In "Leela's Homeworld," it is revealed that Leela is not an alien but a mutant whose parents gave her up to the Surface World orphanage to provide her with a better life. Season 4 features some of the highest-rated and
Season 4 features some of the highest-rated and most influential episodes in the entire series. Futurama Season 4 Ratings - IMDb
While it is the fourth production season, Fox broadcast these episodes across its fourth and fifth seasons.
In "Leela's Homeworld," it is revealed that Leela is not an alien but a mutant whose parents gave her up to the Surface World orphanage to provide her with a better life.